Under normal circumstances, LE would be careful not to engage in wrongful arrest out of fear of being sued for civil rights violations. However, all bets are off when it comes to guys engaged in hobbying. LE pretty much has free reign to do whatever they want because they know that guys who are wrongfully detained and arrested aren't going to sue because of family considerations, employment and, generally, the adverse publicity. So, while an arrest while being in a spa getting just a massage may not lead to a conviction, for the cops it's a win just to break your balls, drag your butt into court and make a nice announcement in your local patch. It also serves as a deterrent. Hence, this very thread.