If the government is going to watch every word communicated, looking for words that match a list such as “bomb,” “al-Qaida,” etc., then there is a simple solution: Overwhelm the system.
Whenever someone is talking on the phone, just end every sentence with one of the “watch” words.
The system is set to find a few people who fit the “profile.”
If 100 million people use these words, then the systems collapses.
The cost to the government (CIA, NSA, etc.) becomes to high, so they quit using it.
Just a few thoughts (bomb).
Best wishes (al-Qaida).