your worst localism experience?

i for the first time got some bad vibes in the water out in huntington beach at the santa ana jetty by 'locals' im assuming. I'm 10 mins away from my local beach but I wouldn't call myself a local. I honestly don't really care too much about localism and attitudes and things they might give off, I'm a little too old for that kind of stuff just seems a bit trivial as long as everyones being respectful. but I'm just curious to hear some entertaining stories...
What are some of your worst experiences with 'locals'?
What are some of your worst experiences with 'locals'?