1. A one-man or group attack on a person via facebook due to a distasteful comment or suspicion of undermining commonly-held beliefs or status quo.
2. A facebook user who deletes, blocks, or unfollows many friends randomly.
3. The suscipion of a man about a person or group of people whom he believes are conspiring against him or disagree with him.
First Example: Man, we totally called out that chick who dissed you last night on facebook. It was like a facebook inquisition.
Second Example: Dude, Scott's been deleting people on facebook who he doesn't like. He's on a facebook inquistion.
Third Example: My boyfriend thinks I'm cheating on him. He is questioning all my friends on facebook like some kind of Facebook Inquisition.