Dallas Mass Shooting Is Deadliest Day for Law Enforcement Since 9/11 but no United States Flags at Half-Staff.

President Obama renewed his push for gun control measures Friday as he condemned the “senseless murders” of five Dallas police officers in a coordinated sniper attack overnight.

The attack, which also injured at least seven, was carried out during an anti-police brutality protest. It was the nation's deadliest day for law enforcement since 9/11. President Obama, speaking at the start of a NATO summit in Poland, decried the “vicious, calculated and despicable attack.” He vowed “justice will be done” and voiced support for the “extraordinarily difficult job” of America’s law enforcement officers. “Today is a wrenching reminder of the sacrifices that they make for us,” Obama said. But before wrapping his remarks, the president once again returned to the issue of gun laws. “We also know that when people are armed with powerful weapons, unfortunately it makes attacks like these more deadly and more tragic, and in the days ahead we’re going to have to consider those realities as well,” Obama said.

Less than a month ago, June 12, 2016, Orlando nightclub shooting happened.

That same day:

For Immediate Release June 12, 2016

Presidential Proclamation -- Honoring the Victims of the Attack in Orlando, Florida

START: 6/12/2016
END: 6/16/2016

US Flags at Half-Staff Honoring Victims of Attack in Orlando

Fly the United States Flag at Half-Staff Immediately Until Sunset on Thursday June 16, 2016

For Immediate Release, June 12, 2016

Presidential Proclamation -- Honoring the Victims of the Attack in Orlando, Florida
HONORING THE VICTIMS OF THE ATTACK IN ORLANDO, FLORIDA
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BY THE PRESIDENT OF THE UNITED STATES OF AMERICA A PROCLAMATION

As a mark of respect for the victims of the act of hatred and terror perpetrated on Sunday, June 12, 2016, in Orlando, Florida, by the authority vested in me as President of the United States by the Constitution and the laws of the United States of America, I hereby order that the flag of the United States shall be flown at half-staff at the White House and upon all public buildings and grounds, at all military posts and naval stations, and on all naval vessels of the Federal Government in the District of Columbia and throughout the United States and its Territories and possessions until sunset, June 16, 2016. I also direct that the flag shall be flown at half-staff for the same length of time at all United States embassies, legations, consular offices, and other facilities abroad, including all military facilities and naval vessels and stations.

IN WITNESS WHEREOF, I have hereunto set my hand this twelfth day of June, in the year of our Lord two thousand sixteen, and of the Independence of the United States of America the two hundred and fortieth.
BARACK OBAMA