Brad Lander, who is the New York City Comptroller and a Democratic candidate for mayor, was arrested by federal agents at an immigration court. He was arrested because he held onto someone the authorities wanted to detain. Lander was at the federal building in Manhattan, observing immigration court hearings. When agents tried to detain a man leaving a courtroom, Lander linked arms with him and asked to see a judge's warrant. The agents eventually separated them and arrested Lander. After he was released, Lander said he was just trying to protest peacefully against the previous government's immigration policies. This arrest happened during a time when there are more arrests outside immigration courtrooms across the country. Other Democratic candidates and politicians have criticized Lander's arrest.