Personally, I don't care if a hit is 100% clean. If you're going to throw a huge hit on a non(primarily)-physical guy, I want my team to go after the guy who threw the hit OR a non-physical guy on the other team.
If you're going to throw a huge hit on Bergeron, don't be surprised if someone tries to fight you. You should probably expect it, honestly. Come to think of it, if you throw an extra big hit on ANYONE, I think you should be ready to fight. I'm not talking regular checks but ones that aren't simply to "separate a player from the puck", which is supposed to be what a check is for. Don't try to bury a guy if you don't want someone coming for you or your teammates.