Law enforcement should stop them. In countries like Germany this is very likely illegal and amounts to preparation of terrorist act.

It certainly seems like they'll stop after they pass it.

Who is they?

These pithy remarks don't really extend the debate or have any nuance - they just sound conspiratorial.

There are plenty of reasons to "scan" communications.

There are plenty of reasons to have limits on communication "scanning".

What part of the spectrum do you fall on?