I'm curious who you think the trolls are. Are they the people who have opinions that are different to yours?
My wife just had a look at this thread and made an interesting point...she reckons the 'guard' who is the grumpiest f*cker in our building is the head and that he spends most mornings bollocking the others, I'm not there during the day...she reckons the really friendly one, the one who always waves at our kids and lets them pretend they're shooting him is also a lazy bastard.
So that's a point...security guards are there to keep the building safe and in good order...make sure you're not paying someone just for smiling!