During the American Civil War, a Confederate States privateer vessel ran out of fuel and had to stop on an island in the Mediterranean. It sent a boat with two guys ashore to Tangiers to petition the Moroccan Government to allow them into port, even though, they weren’t flying any recognized flag. Which was a bad idea, Morocco was the first country to recognize an independent United States, and they were extremely loyal to their ally.
So the Moroccan authorities allowed the US consul at the time to arrest the men with the help of a small team of Moroccan law enforcement.
The Consul then shipped the men back to the United States to face charges of Piracy. The Lincoln Government, however having just had to deal with another affair, Lincoln let them go.
Anyway, back in Tangier, protests erupted in the diplomatic quarter and docks, because people feared that anyone could be arrested at anytime and taken away for any reason.
Nowadays it is barely even a footnote in the History of US foreign policy, but I think it is a crazy whacky story.