In India where a social media post pissed off someone. It was sarcastic criticism - no threats, no slurs). But won't get into details, sorry. (Also arrested a few times for participating in mass protests against corruption, but that was in a large group, so wasn't all that stressful.)
I also had bad luck when traveling to the US. Got detained by the CBP - I think because I accidentally sneezed on the officer and pissed him off. (Either that or I looked like some terrorist). Had to stay in a cell for more than a day. I wasn't even questioned!
Thankfully, nothing happened after that. Was good to catch up on sleep though, since there was nothing to do.