Stealing photos of people's private lives and passing them around isn't humorous. In some cases, such as teens at schools, it has caused the victims to commit suicide.
Even if you don't care if your photos were leaked, that doesn't give you a right to victimize others.
1) I didn't joke about that, but about being an NSA agent trading inappropriate pictures.
2) I agree that it's an obscene joke. My humor tends to the gallows and tends to get me in trouble, particularly with those who don't have one
3) but you know what's even more obscene? NSA's warrantless mass surveillance. NSA analysts trading pictures. A joke about it is not the thing.
4) That's an argument against literally any joke. To generalize your argument: "thing isn't funny because bad things happen". "It's not funny to joke about chickens crossing roads because unexpected animal crossings cause thousands of deaths every year!" That's you.
Any "potentially future employer", or employee, for that matter, must have a sense of humor, otherwise, it won't be a fit.