singlespey:  Wow.......I hope we don't reach the point when the only answer to hate is, in fact, violence.....and, as you seem to suggest, deadly force.  To be sure, there are folks (Dylan Roof as you cite) whose hartred is manifested in extreme violence.  

I would suggest hatred is on a continuum, with deadly violence, of course, on the far end.  I would also suggest it needs to be confronted before it advances to that far end.  Gary Crum