Almost without exception, today's Internet stars come from outside the Hollywood farm system. They are kids, mostly, who have figured out how to make 140 characters and six-second videos wildly entertaining.
Conditions are rife for a global revolution, with channels to drive one ever strengthening. All that's missing is a charismatic leader to pull the strings. History imparts that person will arrive. Pray for goodness because it could be evil.
Race-based comedy has long been a useful site for understanding the fault lines, ambiguities, and absurdities of race in the United States. For better and/or worse, the Internet has democratized the production and dissemination of race-based comedy.