I believe you are mistaken. Trayvon “Slimm” Martin, the one who got shot, used that dartboard (or part of it) for his twitter avatar. The shape of his face, mark beneath eye, and other features are consistent with other photos of T.M.
Many bogus FB pages using the name of Trayvon Martin have been thrown up very recently to muddy the waters.
That pic with the gold teef and the dartboard looks exactly like Martin.
That picture is on FOX NEWS...