Their popularity and talent for molding public opinion will help them, as will the understanding that no one else wants to be his next victim.
Unfortunately, I have seen this too often (the school psych told me it is a common trait for narcissists), and the effects on the victim are catastrophic.
2. As someone who runs a youth group, I know a family which is highly narcissist. It is very painful for me to watch them (they are children, so it is not personal, nor is it a threat). By the first kid, I mentioned something to the father, who turned on me personally and caused some days of heartache. By now, I just feel bad for them - and everyone who will ever be in contact with them. The school psychologist said that he cannot provide help without the parents OK, and the parents will never say OK.
I know of no solution.