Our training up to know has been CCW as related to violent crime inflicted upon us or our loved ones. We never trained for organized mobs with legal (upfront or tacit) government support.
Antifa and the violent leftist mobs have government support from the Democrat Party. Any Democrat-controlled area allows Antifa and the violent leftist mobs to operate unimpeded. Any action against Antifa and the violent Leftist mobs will be punished by Democrats.
There's no way this somehow just ends after the election.
I am not a tactical trainer so my advice counts for crap, but the only solution I see is to accept you will be screwed by the “Law” in some jurisdictions, have a long gun as minimum and a bunch of loaded magazines or easy to reach buck and slugs. Use cover and engage from a distance.
If you're surrounded by the mob, you're already fucked. Avoid Democrat cities whenever possible. If you find yourself in Democrat-controlled territory, get out as soon as possible. If you can't get out, make plans to protect what area you can.
We're already in a civil war. Read that quote from J.R.R. Tolkien that I have at the top of the sidebar: It needs but one foe to breed a war, not two, Master Warden, and those who have not swords can still die upon them.
No, I don't have a solution. I have a feeling that most people don't have a solution to this, short of surrounding Portland and burning it to the ground as a warning to the other Antifa groups.