Well, I was in a student exchange to Boise, Idaho about 20 years ago and did a daily walk around the neighborhood for some fresh air. Three days in, I was stopped by a frantic police officer with his fucking gun drawn because someone had reported me as some kind of child molester who was scouting for victims, because someone just walking was a completely alien concept there.
I was taken to the fucking police station because the policeman thought I was making shit up either. My host family had to wiggle around with my German passport and threaten to get the Embassy involved until they decided I wasn’t worth the hassle and dropped the whole thing… So I learned two things from that exchange: