A great tip… check in with the police before you go bare-chested.
This seems counter-intuitive, but if your laws allow bare-chestedness, give the local police a fair chance to learn about this before receiving a dozen panicked 911 calls from offended passersby (true story). Their daily lives don’t revolve around indecency statutes. I have found most police to be openly thankful when I give them a heads up about what I am doing. If I email, I keep the message short and respectful, emphasize facts, not opinions, and I never apologize or even explain why I am appearing bare-chested in their town. It’s not the police’s job to judge my motivations. It is their job to uphold the laws.
If I am speaking to a police officer in person, I also use this as an opportunity to ask what types of behavior they would consider indecent (touching myself, gyrating, making lewd comments or gestures), if I have missed any local ordinances, and who I should contact if a police officer does stop me. I remain patient while they juggle my unexpected arrival with whatever other duties they are trying to accomplish and I always thank them for their time, even if they give me an answer with which I disagree or know to be untrue.
(Here’s a secret. Even when they insist they are right, after you leave, they will run to their statutes and check in with a superior officer. Mission accomplished!)
(Another secret. Police universally get what I am doing when I compare it to firearm open carry laws. Sad but true.)