Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

Q: This movie left me incredibly confused at the end. I don't know if I missed something or if they just legitimately never explained it. The entire movie felt like just some random action movie that hinted at this great idea backing it but never actually made it around to that idea. It does a great job at making you feel like everyone fears the Divergents, but never goes into the why part of it.  What is so bad about being a divergent and why are the Erudites so keen on eliminating them all? What real threat do they pose to civilization that makes them so dangerous? Was it just that they can't be mind-controlled or was there more to it than that?

A: So what is so bad about being a Divergent?
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Q: In Iron Man 3 Stark first meets this woman (Brandt) who was an Extremis soldier in a bar. He was able to kill her with an explosion.  However, in an earlier scene, another Extremis soldier (Savin) who was also caught up in another explosion, survived. Furthermore, he was also shot in the head by Stark after he killed that Brandt woman but he, again, survived.   Brandt's body was still intact after the explosion whereas Savin suffered more serious injuries (he has a hole in the head after being shot by Stark, for example). How come he survived while the other one didn't?

A: How come this Extremis Soldier died so easily?
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Q: So, this question is not really about the series the Mentalist, but I think it fits here anyway.  First, I am not from US, so I dont know if CBI really exists or was made up only for the series.  In the series Wayne Rigsby and Grace van Pelt have an hidden relationship because it is not allowed at CBI. Everybody warns them to keep it a secret, because otherwise that would have consequences and one of them would have to leave the CBI.   Is this really a rule at CBI or similar American criminal bureaus? What is the reason for this rule? In Europe I have never heard of such a rule, as far as I know relationships are not forbidden here when working together in a police-like environment.

A:
Is it forbidden to have a relationship in CBI in reality?
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