L.A.’s known as the City of Angels … but not everyone’s so nice in this town!

There are always a few knuckleheads hanging out in the nightclubs lining the streets of Hollywood — many of which don’t even exist anymore … and some of these folks didn’t get the memo about asking questions first before throwing punches!

We’ve put together a timeline of dust-ups we’ve caught on camera in the past … check it out just in case you need a refresher about how a fun night out can go south real fast.