I knew I could post what I did and get away with it
How did you learn that you had the freedom to post anything you wanted?
I've been caught in the past for posting something online that I shouldn't have, but that didn't bother me because my victim was a conservative racist who deserved it
Getting back at people can feel good, especially if that someone is a bad person. However, getting into the mud with them just hurts you worse.
You are wrong, I don't care.
If you are posting something that you feel is bad and could get you into trouble, it is probably a good idea to just not do it. Two wrongs do not make a right even if the revenge could be something that makes you feel good short term.