short answer to the topic: yes, it does.
Sort of long-ish answer:
99% of media is made to lie to you about who you are, what you should think, how you should dress, what you should buy and who you should shun.
If you pay attention in the slightest, you'll start to believe what you're told and adapt it as true, because:
A. You're being told by an authority what is true (people in the media)
B. The people that you wish to be surrounded by act as if it's true.
The human psyche is VERY very malleable. And as far as mass media is concerned, if you're black? You're constantly taught to make bad decisions, be as ignorant as possible in all situations, to be educated as a worker bee and all we have is SDE, to shun other blacks if they aren't part of your "team", that a ghetto mentality is all that exists no matter where you are, that we were slaves and if all else fails pray and do nothing.
Even something as "small" and "innocent" as the way trends come and go and the way people change with said trends should tell you exactly how much power the media has over the masses.