Wifi has encryption on by default. There's almost no doubt the NSA could brute force WPA2 if they put some portion of their computers on it. And not a drive-by, they would do it from 10 miles away. But not your network, you are too low value of a target. As for the local cops? I doubt it.
It came out a few years ago that local cops can turn on your cell phone. And that was before “fake news”.
I told my wife years ago that “they” are not afraid of little folks like us. If one of us was to get a following and start preaching the truth, then they’d be interested.