Child porn is probably morally abhorrent enough (and genuinely rare; if >1% of people out there wanted to fuck 4 year olds, I'd probably try to nuke the planet from orbit) to not be an issue.
Maybe terrorism, if "terrorism" is badly interpreted enough to mean any contacts with terrorists, or advocacy of extreme political viewpoints.
Er, you should be wary in nuking only people who've done the crimes, not just those who 'want' to (even if it's something like child porn).
That aside, I'm a big fan of the philosophy that if X causes Y, and Y is something really bad, don't treat Y, do something with X. So, if you have a pattern of priests abusing kids, maybe we should focus on more underlying problems: coerce the church to nullify the moronic rules that prohibit priests from marrying women... and let them live as normal humans live with normal human urges. I know pedophilia strikes a certain chord for people... but everyone deserves justice and dignity, even criminals. The first focus shouldn't be on punishment for the sake of punishment, it should be an action intended to curb future occurrences by studying what causes the bad behavior and indeed tending to those underlying causes.
But what about counterproliferation? The USG has the world's largest and most capable nuclear arsenal. In terrorist cases, reasonable people can disagree about how the USG's interests line up; maybe those cases have just as much to do with energy security or corporate profits as they do with safeguarding innocent citizens. But the same isn't true of proliferation: it really is in the USG's interests to suppress nuclear proliferation. Not coincidentally, nonproliferation is the other objective to which FISA surveillance has recently been put to use.
It's not OK if NSA is hoovering all communications in the US and sifting for national security issues, and that does appear to be what happened with Verizon/ATT/Sprint (though it does not appear to be true of Google and Facebook).
Right there with you. I've started digging in my heels at breaking stories simply for the speed at which people start jumping to conclusions.