First of all you're literally running in his face while he is shooting a PSG, to me it looks like his intention was not to kill you but it is RDM nevertheless alongside with that cheeky holster exploit too so I'll check his recents to see if this warrants a warning to be given out or not.

As for Oxy, not sure why he didn't do shit about it going to be honest here, he's clearly moving around in-game and witnessed the killing so I'll speak to him myself later.