Why do you talk so much about these abstract problems while neglecting the real ones? Black people get shot every day and it's not by the KKK or the police, it's by other black people. They are the real danger, not some parade with slogans. Other blacks is the major violence problem facing blacks in America today and has been for many decades but nobody seems to care. Blacks and Hispanics shooting members of their own groups accounts for most of America's excess shootings compared to other high gun ownership countries. But it doesn't fit well with your political ideology so you ignore it.

A more realistic version of your job interview example is that it's in a rival gang occupied part of town. KKK isn't shooting blacks but black gang members are. Facebook doesn't seem to be able to stop that.