Newark Mayor Ras Baraka said federal prosecutors him tried to “humiliate and degrade” him by making him give his fingerprints and take a mug shot for a second time after a court appearance on a trespassing charge stemming from his arrest at an immigration detention center.

Ras Baraka, mayor of Newark, N.J., was taken into custody outside of a federal immigration detention center on Friday, May 9. Baraka had been protesting the opening of the facility this week, alleging that it was not being run legally.