Activism performed by people who live to protest. It doesn't matter if they are supporting completely contradictory causes, they will be there in full costume defining their entire identity using the current cause they are supporting. See cracktivist.
That mob is supposed to be supporting the Longshoremens Union, but half of them are wearing fursuits and juggling molotov cocktails. Pretty sure it's cracktivism.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.