There's a book that explains this attitude...
Blacks and the Domination of Social Space
A former cop, FBI agent and current criminal defense attorney, Dale Carson, wrote a book called “How to Arrest-Proof Yourself”. I read this and found it very interesting, as it talks about what cops are actually doing on the street. According to Carson, cops look for certain high-profile behaviors and stop those people.
To summarize the book- if you are going to do anything illegal, do it inside, out of public view. Don’t drive an old, beat-up car, and definitely not with a bunch of people in it, that is a cop magnet. If you are stopped by a cop, be polite and try to end the encounter as quickly as possible.
For blacks, dominating and acting out in public, social space is an end in itself. It is about power and control for them. And they are very successful at it, because any space where a black person appears will mostly be controlled by that black person- they will intimidate whites and Asians in that space, although maybe not Latinos.
Black behavior to own and control a social space varies from just hanging out, to hanging out and talking loudly, to being very physically active and boisterous, to play-fighting, standing in the middle of spaces intended for walking, walking four abreast down a sidewalk, walking in the middle of the street, stopping a car in the middle of the street to speak with someone walking in the street, stopping a car in the middle of the street to talk with someone in another car also stopped in the middle of the street- in general, many uses of social space not intended by the white designers, and regarded as inappropriate and selfish by white cultural standards.
Blacks in social space are in their kingdom, but every kingdom has borders that must be jealously protected. Surrender is frequently the strategy. Too many blacks, and whites leave. Blacks are the reason for the demise of the indoor mall. In the ghetto, authorities tolerate and accept this kind of behavior, because most of the residents are black and the community supports it.
Sometimes blacks will rub up a little too hard against whites, and store manager, security guard, or perhaps even a police officer will ask or tell the black person to move, quiet down, or leave, and the black person will respond aggressively. The ability to intimidate whites is very important to all blacks, and they work in concert to maintain this. I suspect that in each situation, the goal of the black is to create as much pain for the white authority figure, without actually getting into legal trouble. The black may not want a ticket, a summons, or an arrest, but is not particularly afraid of these either. A confrontation with a white authority figure is a great experience for a black, gives him status and prestige with other blacks, and if he is arrested gives him even more. From a white logical standpoint, legal trouble is to be avoided whenever possible, but from the black standpoint, while it has personal costs, it also has personal benefits, and benefits blacks as a whole, by discouraging confrontation by whites, however justified.
http://deconstructingleftism.wordpress.com/2014/10/08/blacks-and-the-domination-of-social-space/
While I don't know if I buy every point in the article, I have seen a lot of that same behavior ....food fur thought, is all.