Alberto Castañeda Mondragón says his memory was so jumbled after a beating by immigration officers that he initially could not remember he had a daughter and still struggles to recall treasured moments like the night he taught her to dance.

But the violence he endured last month in Minnesota while being detained is seared into his battered brain.

He remembers Immigration and Customs Enforcement agents pulling him from a friend’s car on Jan. 8 outside a St. Paul shopping center and throwing him to the ground, handcuffing him, then punching him and striking his head with a steel baton. He remembers being dragged into an SUV and taken to a detention facility, where he said he was beaten again.

He also remembers the emergency room and the intense pain from eight skull fractures and five life-threatening brain hemorrhages.