Two anti-China activists are facing federal criminal charges for climbing onto the roof of the Chinese consulate in San Francisco to protest human rights abuses in Tibet.

Nyendak Wangden and Brihannala Morgan appeared in court Thursday to be advised of the charges of a law that prohibits infringing diplomatic properties “with intent to intimidate, coerce, threaten or harass.”

If convicted, they face a maximum penalty of six months in prison. They were released on $25,000 bonds with orders to stay away from the consulate.

On Wednesday, the two women staged a mock hanging off the consulate’s roof. Morgan held a rope and Wangden dangled from it until her rope snapped and she fell to a balcony about 15 feet below. Morgan has alleged consular personnel cut the rope.