PC, thanks for the rep. And I am glad that you are expanding your vision, even if it is still uneven. The point simply is that the OP is far too narrow. The OP appropriately should be that "Violence as a political tool for incorporation of values in the colonies and the United States crosses the entire political spectrum." As it stands today, the violence will more than likely come from the right.
This argument doesn't hold up.
One only need attend a Tea Party rally to know this is hogwash.
Yet when you attend a La Raza rally or an NAACP convention....well it pretty much speaks for itself.