Hundreds of cases. Dozens of articles in the links. It's not one case. It just so happens the one case you are focused on is the one where the guy who claimed there was a shooting admitted in court he lied about getting hit with a rock that led to him ordering teargas. In fact he started using teargas on a peaceful protest turning it violent. He's a liar.
There are tons of articles where ICE snaps up people, claims they did something illegal, the video comes out and they release them without charges. Its an untrustworthy organization of fat underqualified people. Like this board.