They want an ‘equality of results’ in criminal prosecution just like in expulsions from schools. Black kids can fight and not get expelled; whites are thrown out. Same crimes but different outcomes based on race.
Obama hardly started this trend; when it became legal to hire less-qualified job candidates or admit less-qualified college applicants solely because they were black, it was all over (for both whites and blacks). That is why this country is becoming a Hispanic/Asian melting pot.