protest demonstration; protest march
Refers to a public gathering or march to express opposition, often political or social.
昨日、駅前で大規模な抗議デモが行われた。
A large protest demonstration took place in front of the station yesterday.
A citizens' group is planning a protest march against the environmental policy.
Compound of 抗議 (kōgi, 'protest') and デモ (demo, abbreviation of 'demonstration').