Yeah, I get that. But at some point you have to let go of that fear & wariness. Arseholes are pretty universal, and whether they're having a go at you because of your accent, your immigration status, or the colour of your hair doesn't matter all that much. Arseholes gonna arsehole, and they'll find a stick to beat you with if they so desire. The vast majority of people, thankfully, aren't arseholes, and their intentions tend to be on the "good" part of the spectrum.