Once a few of these Brown Shirts get put down the other’s will fade away.
I doubt they'd fade, their masters would just pass out AKs and start a full third world tribal cleansing of anyone they think isn't on their side.
Given the fact that it's Portland, the police would just cease to respond to 911 calls.
Portland is "Bleeding Kansas" and IMHo, barring a dramatic, near miraculously effective, response from the State of Oregon, it's the harbinger of the same thing; Civil War.