A disturbance or riot; large-scale disorder where order is broken—often used for political or social unrest.
都市で大規模な騒乱が発生し、戒厳令が敷かれた。
A large-scale riot broke out in the city and martial law was imposed.
騒乱を鎮めるために警察が追加で派遣された。
Police were dispatched additionally to quell the disturbance.
歴史的な騒乱がその地域の政治を大きく変えた。
A historical unrest greatly changed the politics of that region.