Great piece Johnny and thanks for the great pics too!

"In wearing their colors, which seems to appropriate the original colors of Black Lives Matter — black and yellow..."

Rather than appropriation of BLM, I suspect their colors are a nod to the Chrisopher Gadsden "Don't Tread on Me" flag of the American Revolution and later on, the Confederacy:

https://en.wikipedia.org/wiki/Gadsden_flag

Since it's creator was from Charleston, SC where I'm from, trust me -- I've seen it my whole, Black life.