A　protest　march　often　takes　place.

抗议游行时常发生。

youdao

The protest might have petered out had not snipers in plain clothes, assumed to be security men loyal to Mr Saleh, fired into crowds in the capital on March 18th, killing some 50 people.

抗议也许会慢慢的消失，但是便衣的狙击手们可不会，他们假装成忠诚于萨利赫先生的安全人员，于3月18日朝着人群开火，致使50余人丧命。

youdao

Labourers have dared to demand better wages. On March 18th hundreds of workers in the emirate of Sharjah torched cars and buildings in a Labour camp in a protest over pay.

劳工现在敢于要求高些的工资，3月18日，成百上千的工人在Sharjah部落点燃汽车并筑建一个劳工营来抗议低薪。

youdao

And three years later she led a children's march to President Theodore Roosevelt's New York home to protest child labor.

VOA: special.2009.03.16

She took part in the March on Washington protest in nineteen sixty-three.

VOA: special.2010.05.23

In June 2011, campaigners staged a protest march and rally against changes at Llanelli, and in August that year handed a petition to the chief fire officer.

BBC: Llanelli fire station: Authority to discuss shift row

Last October, several hundred Liverpool fans staged a protest march organised by the Spirit of Shankly group against the owners ahead of their Premier League clash against Manchester United.

BBC: Liverpool put up for sale by American owners

About 250 people turned out for the protest march, organised by the North East London Council of Action, from Chase Green war memorial through Enfield town centre to the hospital.

BBC: Chase Farm Hospital: Protest march over A&E plans