https://arstechnica.com/tech-policy/2020/04/facebook-nixes-anti-quarantine-event-listings-for-violating-state-rules/

Facebook has nixed event pages for planned protests against stay-at-home measures in California, New Jersey, and Nebraska. The actions come at the request of state officials, who say the gatherings would violate state orders.

Facebook event pages for similar protests in other states remain online.