Some people have already made this comparison. But the only real point of comparison is that once the media established a narrative, facts don't matter. Here the narrative is that some cop shot Brown because...well for no reason at all. In Martn's case some white Hispanic guy shot Martin because he didnt like the looks of him. Both narratives are completely wrong, not even believable. But it doesnt matter. People will insist those are the true accounts and they will dismiss, or rationalize away any contrary evidence.