I'll buy that argument for people doing menial customer service work. I don't buy it for people with jobs like these - these sorts of people have all kinds of options available to them. At the very least they probably have TS clearances which is going to open a ton of other doors (maybe just as tainted, but maybe not).
Convenience over principles is what got us here.
As general rule: if you could say it in defense of being a member of the Waffen-SS, it's probably not a very solid argument. Everybody has their sob story, but long after those people are dead others will STILL have to deal with the messy, fucked up and stupid structures cowards erected. And with that in mind, my sympathy kinda fades.
And that your friends would do it is no argument either, people always seem to have this idea that they themselves (or their friends) are special and ought to not be criticized. Everybody is so fucking magical when it's about them. Contrast this with how we talk and think about people of the past, of other countries or other social groups.
Also there are the people blown up by drones, or the ones threatened with it http://motherboard.vice.com/blog/will-nsa-whistleblower-edwa... (because who needs trials when you have "intelligence") Those don't even get to the point of worry about job security, and they don't seem to even figure into any of this.
When evaluating alternatives, it can be challenging to identify employers that have and will continue to maintain a flawless moral track record, not only for their own organization but also for the customers and vendors they support.
If asked to name such an organization on the fly, one might be hard pressed to pick one that would hold up to HN scrutiny.
Hell, I would even consider having "NSA xxxx - summer of 2013" on your resume to be an indicator that you are a person with backbone and a sense of morality. Bonus points right there.
I don't believe for one instant that these are people just desperately trying to feed their starving family. They have options, they choose to stay on.
Everybody dies. Few people live.