It does not take much imagination to see how use of these tools can be easily abused.

There are already stories of abuse, here are a few: https://www.aclu-wi.org/news/what-the-flock-police-surveilla... (Many more can be found with a quick Google search.)

Honestly, "if you have nothing to hide, you have nothing to worry about" is a juvenile take in a post-Snowden world.

You aren't the one deciding what is a crime and what isn't.