0 an activity in which a worker or group of workers protest outside a building to prevent other workers from going inside:
The dramatic unfolding of events, particularly the mass picketing and the response of the police, is well known.
National NAACP leaders announced a boycott against the 24-hotel chain in July, calling for picketing outside hotels nationwide.
Ramp workers, who soundly rejected a contract deal and remain in mediated talks, this month staged the first picketing against the airline in more than two decades.
