I've said it many times before, and I'll say it again. America learned to walk on violence. Like a toddler. Slavery and the wanton killing of Black slaves for "standing" up to their white owners begat murder and mayhem. Killing Native Americans at will and for their lands came next. There is no other explanation. A nation brought up on a murderous legacy is what we are dealing with now. Until America turns to face itself on all these counts, nothing will change.