Some people are too paranoid.
When I stopped skateboarding I started photographing skateboarders that would gather at malls and such and do their flippty tricks. That was until the 3rd time a police officer said somebody had called them to say some gray haired guy was photographing the children.
I'd ride around the city on my beach cruiser with a nice camera and take photos of interesting things, like skateboarders, barking dogs, trash cans or whatever caught my attention. I may have looked like a homeless guy to some? The cops knew me so it was no biggie but it was aggrevating.