My predictions for tomorrow are as follows: there will be maybe 4-5 violent Antifa protests. They'll break windows, tip over trashcans, spraypaint stuff, and punch at least one person. A car will potentially get burned.
The fallout will be as follows: a short-term ideological shift away from liberal politics, followed by regression to the mean. Conservatives will re-circulate the 'label Antifa a terrorist organization' petition.
Basically, nothing particularly bad is going to happen. There will be some newsworthy incidents of Antifa dumbforgetery, but that's about it. Predicting a 'civil war' is some Humble Water Filter Merchant-tier stuff.