To tell you the truth I don’t think the real Civil War ever stopped. Just the shooting.
The difference this time is that the opposing side wants to completely change our constitution and country. That kind of civil war can't be fought at the ballot box because the enemy wants nothing less than the destruction of the ballot box. Democratic Socialism/Communism/Marxism is mandatory, not optional or voluntary. Most citizens of the U.S. will never simply turn their property over to the state. It must be taken by force.
I think when Trump got elected, the Radical Left realized that the electoral system in this country will not give them what they want. That is one of the reason we see such ramped up rhetoric from the Left.
Trump's election was a wake up call.