What makes most people uneasy, and especially those of us who work in tech, is that many police departments and 3 letter agencies have routinely abused the trust that people put in them. If you want the citizenry to have trust and faith in law enforcement, they have to demonstrate a desire to not break constitutional rights when they deem fit to do so.
I genuinely don't understand why these agencies wouldn't try to build a good relationship with the citizenry they are supposed to be protecting. It often seems like we live in a very dangerous society and everything we say or do is being monitored by someone and may be used maliciously. That itself is a very terrible thing to live with.