From Longman Dictionary of Contemporary Englishsit-down strike/protestsit-down strike/protestSTOP WORKING/GO ON STRIKEa protest in which people sit down, especially to block a road or other public place, until their demands are considered or agreed to → sit-in → sit-down
Examples from the Corpus
sit-down strike/protest• Nearly 1,000 fans staged a sit-down protest calling for Branfoot's head, despite the victory sealed by Richard Hall's header. 