Democrat and Republican politicians and the lobbyists that encourage them are the greatest threat.
KKK and antifa are just tools they use to manipulate the public.

Universities are preventing controversial speakers from speaking in fear of counter-protesters. They have effectively killed the first amendment using fear. That's more dangerous. We've ignored the kkk for decades and they haven't grown. .03% of the population is nothing to fear.

My vote goes to Antifa as the most dangerous. One reason is it is "catching on" and the KKK is of no significant importance.

Anti-fa by far are the most detrimental to our country. Most everyone accepts that the KKK is a disgusting, horrible bunch of idiots. But the Antfa group who yells moral outrage and says that it wants a peaceful and fair country is anything but. Antfa is bought and paid for by the Socialist and the Communists. It thrives on civil unrest, oppression, and thought control.

They are both socialist organizations with the destruction of America on their agenda. They are two sides of the same coin. The KKK, however is far smaller that Antifa, which is spreading with the help of the MSM. I would say that, for now, Antifa is the more dangerous group.

All of this is fully outlined in "Rules for Radicals".
None of these groups including BLM are at all associated on the right but this label must be tagged to them in order to have the division they need. I instead label all of them under just one title, Anti American!

Antifa is the greater threat. The KKK is nothing more than a dog-and-pony show, mighty convenient for George Soros. Who, by the way, is the real-world answer to Ellsworth M. Toohey. The one thing Atlas Shrugged lacked was a genuine Toohey-like arch-villain. George Soros fits that bill.

Charlottesville was a set-up. That I will swear on a stack of first editions of Atlas Shrugged as high as the building in which I live.

What republic? We haven't had a republic in > 100 years. :(

Definitely Antifa, IMHO. The real power of the KKK was broken back in the '60s and '70s and all that remains is a handful of copy cats and wannabes. I read a book a decade or two ago written by some retired FBI agents that worked on the teams that brought down the KKK. There will always be kooks that pretend to be KKK, but there will never be a real KKK as it was known in the past. An interesting quip I just heard on the radio is if all the KKK and white supremacists in America were gathered into the same town, it would be doubtful they could elect a dog catcher. Of course the left stream media would have us believe the 60 million supporters who voted for Trump are all card carrying members of such groups.

Antifa, however, is just a different name for the same communists or communist directed useful idiots that are pressing the collectivization of the USA. They are winning.

The clash in Charlottesville on the surface looks like a confrontation between Nazis and Communists during the fall of the Weimar Republic, but the Communists definitely have the upper hand and, as said elsewhere here, set this up to damage Trump who is serving to slow down their efforts.

The KKK was the militant wing of the Southern Democrats for very, very long. Considering that the Republicans have always been very pro-freedoms and sovereign citizen, it seems like the KKK probably is more on the far left of the Democrats than the DNC would readily admit.

Antifa is the militant arm of the SJW movement. The Klan hasn't been a factor in almost 50 years. We have given way too much glory to the protesters of the sixties. So now we have these young kids who are being indoctrinated to believe that skin color and gender are important deliniators to what kind of life you have been dealt. And they think they can 'correct' all there perceived woes by staging protests which they are itching to do to believe they can pretend to be like the protesters from the sixties and make a difference. And I love the irony of the antifa movement using methods created by fascists.

I believe most people would initially think to answer they are both detrimental to our republic and suffer inadvertently into a PC syndrome. However, the wording of the question is distinct to ask "to our republic". To me, Antifa is more detrimental for the reasons you mention. The KKK and Antifa are both hate groups. But were the KKK, which was founded by the Democrats, has become pretty much ineffective and small in numbers, does not present the same danger to our republic that Antifa, (also created by the Democrats, and therefore can be called the "NEW KKK") presents to the republic. Antifa has globalist ideology, a hodgepodge of socialist/communist/pseudo science ideas , censorship of opposing views and contempt for 1st amendment, belief in dictatorial principles of confiscation regarding the 2nd amendment, control of mass media and who knows what else.

Both these group are from the same cesspool. If you imagine a light bulb shape with the top being center, then right and left away from the top according to your ideology, the cesspool is the bottom, neither right nor left. That's where these two groups are, along with other groups and some individuals. An ideological cesspool.

Cesspool residents, like KKK and Antifa, are the kind of people that will ask you to give them $10.00 and if you do, they insult you and demand 2 $5.00 bills.

This is like asking if I'd rather take arsenic or cyanide.

Both groups are either mostly or all fakes, for the purpose of smearing the Right. The best defense is to laugh and point this out, while never saying anything that could help the lying media smear us by association with the thugs.

I have a suspicion that both "Antifa" and the "Atl-Right" are funded by globalist money. Soros comes to mind. It is part of an effort to cripple and wipe out Trump's all-too-popular presidency. The KKK just happens to fit into the plans. "Let's you and he fight."

Look at the number of people stepping up to criticize Trump for one thing or another. The Lame-Stream Media ignored criticism of 0bama, but they gleefully dig right into any bad words about Trump.

This stuff is not new. When I was a young lad, it was a sin to suggest that someone might be Communist. The Russians were paragons of virtue, not only because of their commitment to socialism, but because they starved themselves to gain it. The US, on the other hand, was evil because we could have fed the whole world for free, but didn't. Wait, we came close to doing that, but failed to collapse into socialism like we should have.

Now I've done it! I've gone off on a rant, preaching to the choir. How can I convince some of the "useful idiots" instead? Get them to connect the dots, to follow the money, to see why "tearing down America" is their actual goal even if they think it isn't?

I'm going to go out on a limb here and predict that civil unrest is going to become a common occurrence in big cities and eventually its going to erupt into something far more serious than these brawls. The culture of cliques is coming into its own in the United States. The KKK is one of the oldest, but most people already know what it is and rightly despise it. Black Lives Matter (I first typed in Black Lice - Freudian slip?), Antifa, Occupy Wall Street are now being funded to encourage violence and hate. Add to that religious emnity and a violent religious ideology (Islam) and add in the divisive rhetoric of the politicians - especially on the Left. The melting pot is being stirred and the heat is being turned up, but instead of things melting and flowing together coagulents are being added to clump everything up. Pretty soon things are going to boil over.

I'd say if for no other reason than sheer numbers which they seem to be able to turn out, the Antifa are the most detrimental to our society. The ideology of the idiots of the KKK have the potential to be harmful, but again sheer numbers dictate that they'll never really have a platform from which to speak. (The whole "tree falls in a forest...does it make a sound" comes to mind.)

Antifa is far more detrimental. The purposes of the KKK are easily understood, but Antifa doesn't have a specific purpose or goal...it changes with the whims of its supporters.

Ayn Rand references such things in Atlas Shrugged. Antifa is like the fluffy, cotton-like, "cloud" that can't be fought, because there's nothing solid to it that can be grasped.

The KKK seeks to gain consensus to their silliness. The AntiFA seeks limit a constitutional right. Both are stupid, but AntiFA is more dangerous, by far.

Having studied the rise of Fascism in Italy, I'd have to say the Anti-First-Amendment group is the larger threat.

As pointed out, both are just mirror images of each other! Neither stands for what is good for or about America. The KKK wrapped itself in the flag as a sign of patriotism but there actions were anything but. Antifa is new on the scene but its tactics are right out of the fascist-socialist handbook, they have distain for anyone who does not agree with them. Both groups are not good for the country because each wants to impose its decidedly hurtful values on our nation.

For the moment, Antifa, because they are better organized, financed, have media backing, espouse a philosophy which killed over 100 million in the 20th century while Fascism 'only' killed on a quarter of that, and humanity seems to identify evil more with Fascism than Socialism/Communism.

Antifa is the greatest threat, described as champagne socialist, muddied by political correctness and see racism everywhere but refuse to acknowledge reverse discrimination. They are as violent as BLM and seem to attract the millennial generation,
All of that spells bad news.

The essence of what made America great was individual rights, limited government, and capitalism. Neither side in this debate thinks we should have any of the three. Indeed, they are so intent on erasing history or distorting it, that they blatantly tell lie after lie. Herewith is an excerpt of President Obama's 2011 speech in Kansas.

"Now, just as there was in Teddy Roosevelt's time, there is a certain crowd in Washington who, for the last few decades, have said, let's respond to this economic challenge with the same old tune. "The market will take care of everything," they tell us. If we just cut more regulations and cut more taxes – especially for the wealthy – our economy will grow stronger. Sure, they say, there will be winners and losers. But if the winners do really well, then jobs and prosperity will eventually trickle down to everybody else. And, they argue, even if prosperity doesn't trickle down, well, that's the price of liberty.
Now, it's a simple theory. And we have to admit, it's one that speaks to our rugged individualism and our healthy skepticism of too much government. That's in America's DNA. And that theory fits well on a bumper sticker. But here's the problem: It doesn't work. It has never worked. It didn't work when it was tried in the decade before the Great Depression. It's not what led to the incredible postwar booms of the 50s and 60s. And it didn't work when we tried it during the last decade. I mean, understand, it's not as if we haven't tried this theory..."

You see government regulation and control works - capitalism doesn't. The full text of his speech can be found here:
https://www.theguardian.com/world/201...

They are flip sides of the same coin. Both are prejudice and haters based on nothing.

From The True Believer, Eric Hoffer:

A mass movement attracts and holds a following not because it can satisfy the desire for self-advancement, but because it can satisfy the passion for self-renunciation.

Faith in a holy cause is to a considerable extent a substitute for the lost faith in ourselves.

The less justified a man is in claiming excellence for his own self, the more ready he is to claim all excellence for ....... his holy cause.

A man is likely to mind his own business when it is worth minding. When it is not, he takes his mind off his own meaningless affairs by minding other people's business.

When our individual interests and prospects do not seem worth living for, we are in desperate need for something apart from us to live for. All forms of dedication, devotion, loyalty and self-surrender are in essence a desperate clinging to something which might give worth and meaning to our futile, spoiled lives.

OF COURSE IT HELPS IF YOU ARE GETTING $25/HR FROM SOROS, ET AL.