Anti-vaccine protesters on Friday hurled what authorities believed to be blood onto the Senate floor at the California State Capitol in Sacramento, leading to an evacuation of the building on the final day of the legislative calendar.
A video of the incident was posted on social media, which shows a woman telling California Highway Patrol officers, "My menstrual blood is all over the Senate floor." The woman was subsequently detained, and posts from her Twitter account are connected to anti-vaccine demonstrations that occurred at the Capitol earlier that day.