Really? In fact you have no idea what my opinions are on either incident. (And you think those who think the Trayvon Martin shooting was unjustified "sow racial division"? Great God Almighty.)

There is no excuse for an educated person like yourself to exist in an ahistorical vacuum. I suggest you give David Blight a listen and get your head out of the sand.

http://wnpr.org/post/confronting-hate-tolerance-intolerance-and-rise-white-nationalism

https://www.theguardian.com/us-news/2017/aug/20/civil-war-american-history-trump