No idea. In your case it is probably because of name-calling. Personally I usually don't downvote people for asking nicely why something was downvoted (when i

No idea. In your case it is probably because of name-calling. Personally I usually don't downvote people for asking nicely why something was downvoted (when it isn't totally obvious) even if I know it is against the rules but the the moment name-calling starts any hesitation goes out the window.