If you know your electronic communication is being monitored, you start using couriers, carrier pigeons and invisible ink snail-mail--anything other than electronic communication.
The recent confirmation of programmatic domestic surveillance is rich with absurdist, tragi-comic narratives. Just to take the most obvious:
1. Is anyone dumb enough and/or credulous enough to believe "the bad guys" aren't aware of U.S. surveillance and electronic monitoring capabilities? Garsh, why did Osama bin Laden use couriers rather than his mobile phone?
Is anyone dumb enough and/or credulous enough to believe the bad guys think their communications within the U.S. or between non-U.S. and U.S. groups are safe from U.S. surveillance/monitoring because they really really trust the Bill of Rights to protect them?
Naivete about what the U.S. National Security State is capable of is highly correlated to which end of the drone strike you're on.