You can't even turn that into self defence .

I can, because it was, as you yourself describe:

He was being pummelled because he followed some kid around with a loaded gun because he was black.

None of Zimmermans actions were legally in the wrong. He spotted a person who fit the description of the perpetrator of several recent burglaries. He followed that individual, while legally holding a CC permit, and was then attacked by that individual, who he then shot in self defense.

Despite being on the phone with 911 and the operators telling him to stop.

Who hold no legal power, and he complied.

If some black people steal from people in my town does that mean I should get followed by an adult with a gun?

Well, Zimmerman was CCng so you wouldn't have known he was carrying. Should you? Probably not. But it's understandable regardless of your race that if you fit the description of recent criminal activities, are in an area that was recently victimized, and cutting through peoples yards that you might be scrutinized a little more. And you also shouldn't attack someone simply because they are following you. Maybe ask them why they're following you? Explain the situation?

Again, this is getting off topic. If you want to talk about the artwork, I'd love to do so. If you want to soapbox and turn this into a racial current/past events issue, this isn't the place.