no piling on. Simply pointing out you get all offended when someone makes a humorous reference to you directing a group of anti-trump protestors by megaphone. The visual image was funny. But when you call people racist and are not joking, it's cool, and pointing it out is apparently starting a dog pile
When and if I call some a racist, I think they're a racist. If someone who wasn't called a racist get's upset, because they "think" they're being called a racist, that says more about their insecurities than anything else, and perhaps they should reflect on their beliefs.