Looked to me like the black guy watched one too many Spike Lee movies and thought he could take any white guy.
There is definite substance to what you've said. I would call it the new
Black machismo and I believe it's what led to Trayvon Martin being shot to death by George Zimmerman. In fact the controversial
Stand Your Ground laws are probably a response to what is an increasingly common Black sense of "knock-******-out" machismo, a projected manifestation of the ghetto thug mentality.
It is exactly that impetus which seemed to motivate the Black fellow in the video. He appeared to be prompted by some obligation to physically prevail over the Whites -- who were content to walk away from the confrontation.
Today the Governor of Georgia signed legislation which further expands gun rights. I have no doubt the rising tendency of lawmakers to eliminate firearm constraints is the result of pressure applied by Whites who are fed up with the rising tendency of some Blacks to assert the ghetto thug mentality. This mentality recently reached the stage where some young Black males have conceived a game called "Knockout," in which they randomly select a vulnerable White person on a street to viciously attack.