OK. I'm homeless and I've been using an electrical outlet, outside the Walmart to charge my smartphone. I've been doing it for several months now and haven't had any problems from law enforcement...until now. A police cruiser pulled up and told me I had to leave because there was a no loitering sign. I've checked the local laws about this concerning what loitering is and isn't (I'm in Huntsville, AL, btw) and it does mention loitering signs. My question is can the police just come by and tell me to leave, or do they require a complaint from the property owners first? As I've mentioned, I have never had and complaints by owners or police officers until now.