From an interview with a costumed Portland protester. Portland rules and this is spot on:

“There’s been a nice overall whimsy that has shown up. The frog is amazing. We had a bunch of other inflatable people here last night, too. I saw people playing Twister the other day.

What they rely on is fear. So by coming out in an absurdist manner, it speaks to them, to some extent, that we’re actually not that afraid.

It also dismantles their narrative a little bit. When they try to describe this situation as “war-torn,” it becomes much harder to take them seriously when they have to post a video saying [U.S. Secretary of Homeland Security] Kristi Noem is up on the balcony staring over the Antifa Army and it’s, like, eight journalists and five protesters and one of them is in a chicken suit.”

— An Interview With the Portland Chicken (archived)