Here is the problem with false equivalencies, which is also the problem with "postmodernism explains all ills," a problem legible in two words of your supposed scenario: "maybe Antifa." In setting up the false equivalency, you have seeded in one of the biggest deceptions of 45's propagandists: that "Antifa" (capital A, as you used it) is some organized domestic terror group with a vetted membership, as is the case with III Percenters, Proud Boys, and Oath Keepers. Are you a victim of postmodernism here, or are you conceding a talking point to right-wing propagandists because it will help you ride your hobby horse once more?

My advice to you, sir: get a new bit.