They have the press and NSN in their pocket. These outlets are the primary news and opinion source for a majority of the people. If you total news watchers on cable (CNN, MSNBC and Fox News) you get about 1% of the population +/- a small fraction. Almost everybody else is on MSM and OTA networks thus they see only one side of the questions and debates.
Some are on Twitter, Faceboo and Instagram but being generous that is only another percentage point.
Don't forget the education system is heavily slanted left and preaches the progressive agenda starting in kindergarten to indoctrinate the children.

That translates to, white people or people of color. In the delusional world of the more left, which one they are is how you judge them (or prejudge them.)