It's usually always the ones who target people who are the worst offenders. They also talk about people behind their backs constantly under the guise of "venting" and then do not discuss their problems until everything explodes, and once they get one person out of game they target another out of boredom.
And you better be prepared for a whirlwind if you finally put your foot down or cut them off.You're the bad guy. You will always be the bad guy to them.
We have all done things we're not proud of, but somehow they are never ever wrong, and at the same time the most sanctimonious people ever?
Just be strong, their actions will eventually catch up with them, and the people they demonize will be fine.