I'm inclined to think that the way the stereotypes were started and then perpetuated to begin with was they reported the persons color in news stories for decades for everyone who basically wasn't white. Couldn't artificially focusing on any particular group or groups eventually lead to a stereotype if you aren't reporting on the others equally?
The stereotype of the "scary black man" predates cable news reporting. The "savage colored man" predates slavery, and goes back to racist colonists, racist explorers, if not even before that and before that.
It doesn't matter which came first. The point is that the stereotypes are not relevant to today's society no matter how they started.
I'm inclined to think that the way the stereotypes were started and then perpetuated to begin with was they reported the persons color in news stories for decades for everyone who basically wasn't white. Couldn't artificially focusing on any particular group or groups eventually lead to a stereotype if you aren't reporting on the others equally?