Ask HN: NSA and GCHQ incompatible licenses

Everyday something new comes up with the security services of the world infringing our liberties. We write software, some of is it is open sourced, most of it has licenses.

How feasible would it be to add a clause to some of these licenses that denies the use of that software by security services for spying on their own people? Obviously some open source software would have a greater impact than others. What open source software is likely used by the NSA and GCHQ et al?

I'll start with OpenSSL!