I Am Now Banned from Facebook

Just got a 3-day ban from Facebook for making this comment:

Trannies are mentally ill!

This violates Facebook’s code against hate speech. Can someone tell me what part of this comment is hate speech?

Is the world tranny hate speech? I thought it was just slang for transsexual. Is tranny a slur now? I can’t keep up with the ever-expanding list of words that get banned as slurs.

Is it hate speech to say transgender people are mentally ill? I am trying to figure out what I did wrong here. It was on a Marxist site.

There are some tranny morons on there, including a man ...