Not in any way to Trayvon Martin being dead or George Zimmerman being free. But more on how the President sees himself as a citizen and a leader of his people. It says that the President sees himself as somebody who has been racially profiled and it has left an image with him that he feels betrayed by the Caucasians he leads and represents.
He chose to not stay mum and remain neutral on the subject. I think it is something he is free to feel and its impossible to tell somebody that you cannot feel a certain way because you are the POTUS. But the right thing to do is to keep your feelings to yourself to prevent the "favorite child" feeling amongst all of his citizenry.
Edit for grammar and spelling I should've done before I posted