This forum should be above intellectually disingenuous comments such as this. This isn't Facebook, I'm not going to meme back at you. If you don't understand BLM at this point, that is a decision you've made and you will live with the moral and other implications.

Edit: likewise, it's perfectly reasonable to think the GitHub/git trend is silly or ineffective. But keep in mind that "virtue signalling" goes both ways. When you speak out against what you see as silly, ineffective but is ultimately well meaning, you're virtue signaling that "all lives matter."