What is "Acting Black"?

"Acting black" is term used when a white person is portraying the image of an African American. It could be from, clothes, the way the talk, walk, live etc. There so many ridiculous ways to determine if someone is acting black and it's actually the most dumbest stereotype.

I created a video/interview of a very good friend of mine in which I went to high school and college with. Since the first time I met him, he always got comments about the way he dressed and that he was "acting black" which he is far from the actual meaning of the phrase. Check it out. He can definitely explain it better than I can.