[nullc]

> Wouldn't the PD need to show in court why they suspected you in the first place?

No, not really. They have to show e.g. probable cause but they can happily use secret information to create serendipity: "We happened to be parked outside the suspect's location at just the right time to wittiness them talking to a known communist sympathizer."

Its not unusual for information from paid informants to get washed in this way in order to conceal their identity and prolong their usefulness.

[temp453463343]

Yeah, but that's often hard to pull off.

For instance in the original example you're violating an internet law. It's not exactly something the PD can just pretend to stumble upon unless you're really careless and do it in a public place.