I try to walk daily (Southern California) around the perimeter of a public park. The gates to the park are locked, the playground is shut down with yellow tape, but we can still we can access the loop and grassy areas. Today, I wore shorts, shirt, shoes and socks (no mask). As I exited the park, I noticed a local police officer securing a flyer to a lamppost. The flyer was in Spanish, but it clearly warned folks not to enter and to follow common sense rules. I asked the officer if I was okay. He said, "yes, as long as you keep moving." So, mask is not required, keep your distance, and keep moving.
During my lunch, a local news story reported citations for a group of people in a public park gathered to watch the sunset. It turns out the neighbors called 211 to report them as Stay-At-Home violators.