We aren't in any civil war. Yet. We'll know when we are, because thousands will be dead and troops will be involved. Got to have troops for a civil war. Definitions, people.
But we are definitely in a situation like during the 1850s. Serious division, hatred, political crime in "Kansas, Bleeding Kansas." Even Harper's Ferry was not yet a Civil War (but close!). Even the seven states seceding after Lincoln's election wasn't a Civil War. When the troops came out, however, there it was.
We'll know when it happens.