It has no meaning because it is a sentence fragment. I think it should be: The young man is famous for being caught in ugly social situations. If I understand correctly, the man is constantly getting into bad or ugly social (or public) situations and that has made him famous.

You can also say, "A young man became famous/infamous for his commentaries on the ugliness of society."

No, it doesn't sound right. -- famous FOR, not famous FROM -- I don't know what "hitting social ugly situation" means. Can you express it in plain English?