Jesus you're down to the third definition in one dictionary. I've seen some weak ass internet lawyering in my time but holy shit.
Why not just be honest about things? You've gotten convinced by right wing political narratives about what BLM is and because of culture war politics you want to repress this cultural artifact?
So this is just a political faction using fear and intimidation to repress culture. Go ahead with your silly "the rules are the rules" bullshit, but it's obvious that many cultural adornments are considered acceptable by Amazon except this particular one because they're afraid of a violent political faction or are perhaps in agreement with that political faction. Either way it's a political faction repressing culture, ie. Culture War. It's not even like anyone's subtle about their motives in all of this. Why are you trying so hard to be?