BEIJING — The young Chinese feminists shaved their heads to protest inequality in higher education and stormed men’s restrooms to highlight the indignities women face in their prolonged waits at public toilets.

To publicize domestic violence, two prominent activists, Li Tingting and Wei Tingting, put on white wedding gowns, splashed them with red paint and marched through one of the capital’s most popular tourist districts chanting, “Yes to love, no to violence.”

Media-savvy, fearless and well-connected to feminists outside China, the young activists over the last three years have taken their righteous indignation to the streets, pioneering a brand of guerrilla theater familiar in the West but largely unheard-of in this authoritarian nation.

Now five of them — core members of China’s new feminist movement — sit in jail, accused of provoking social instability. One of the women, Wu Rongrong, 30, an AIDS activist, is said to be ailing after the police withheld the medication she takes for hepatitis. Another, Wang Man, 33, a gender researcher, was said to have had a mild heart attack while in custody.