In regards to people doing overtly villainous things and then walking around as if nobody can touch them, if it gets to the point where they're clearly metagaming (they just shanked someone and danced in the puddles of their blood in front of a city guard), I think it's safe to just ignore them because chances are they weren't serious members of the community to begin with.
That said, always send them a tell first to let them know if what they're doing is straying over to the metagamey side of things first. A good RPer will take the criticism and learn from it.
That said, always send them a tell first to let them know if what they're doing is straying over to the metagamey side of things first. A good RPer will take the criticism and learn from it.