The Green Party’s presidential nominee was arrested Wednesday in Philadelphia and charged with trespassing during a protest against Fannie Mae.

Jill Stein, a Massachusetts resident and Harvard-educated doctor, was arrested along with four other Green Party members, the Associated Press reports, including her running mate, Cheri Honkala, a single mother who once ran for Philadelphia sheriff. The group of about 50 activists was trying to reach the government-backed lender’s downtown office through an adjacent bank. When they were denied entry, they staged a sit-in.