That is why there is no such thing as "coexistence" with:
A. Leftists.
B. Fundamental Islamists.
With everybody else, anything is possible. Just not with the two listed above. They are wholly incompatible with civilized society. The first Civil War may have been more 'civil' than most civil wars in history, but if another one is to really come to this land, no quarter would be expected, nor given. With each incident like this one, another Jesse Plemon's character is created, just silently waiting in the masses. The makers of that movie intended to create a villain, but they gave a hero to the angry and fed up people out there who are tired of the nonsense...