This is extremely counterproductive. You aren't going to get anywhere simultaneously bemoaning the damage caused by extremist acts and the excesses of the NSA.

When you point out the failures of the NSA to stop specific instances of terrorism, it only suggests that they need more resources and legal surveillance. The reasons for wanting the NSA surveillance to stop have to be that the innumerable injustices suffered by citizens under a surveillance state would be worse than the occasional extremist attack that would be preventable under such surveillance.