Cosplayer Clara Tan was one of many people who had hoped to attend the Umamusume: Pretty Derby event in California last week, which wound up being cancelled after U.S. immigration refused visas to the Japanese cast and staff. Still, she stuck around with friends, attended events, and cosplayed as character Super Creek. On October 26, Tan flew back home to Rochester, New York, got off her plane, collected her luggage, and left the terminal. It was then that four ICE agents shouted her name, and informed her they had a warrant for her arrest.

This was at midnight, in the dark, outside the airport. Tan asked if she could see the warrant, and asked the four men if they could show her some ID. “We can show it to you in the car,” replied one, “just come peacefully.” Trying to make a call on her phone for help, Tan says all four rushed her at once, sending her phone flying, and tackled her to the ground.…