When a team of Chinese state security agents picked up Li Wenzu and then prevented her from leaving her own home last week, she was scared but not surprised.

She was detained on the seventh day of a protest march she organized in an attempt to get the authorities to explain what has happened to her husband, Wang Quanzhang, a lawyer who has been missing since August 2015 during a sweeping crackdown on rights activists.

Li was initially barricaded in her home by dozens of people, including plainclothes security officers and members of the local neighborhood committee, she said. Scuffles broke out between her supporters and the crowd, according to videos shared with Reuters.