My suspicion is that this is very tongue-in-cheek. Conspiracy hat time, but maybe a few people might be doing this to damage the image of these movements AND dog whistling at the same time that it isn't what it seems. They're not intending to actually support BLM or the LGBT.I mean, there are multitudes of animals to choose from. Why not pick a species without any baggage?
But again that's just a crazy thought. It's more likely that people are fucking stupid.