This was all so obvious you felt you didn't need to explain, yet at the same time, it's impossible to know how this will shake out until we know more?
Was really trying to understand what your stance is, but I guess (to paraphrase Stein) there isn't much there there.
I think it's highly unlikely you will see any escalation of violence beyond these types of solitary, isolated instances where there is clear instigation going on.
People are generally sane. Seeing this video didn't enrage me to the point that I thought I needed to stand up and violently defend whatever side of the idiocy going on in the video I support.
To fear that violence is going to be widespread is a bit too Chicken Little - at some point, acceptance and moving on with lives inevitably happens.