I wonder what they are protesting against.

我不知道他们在抗议什么。

youdao

That’s why I was protesting against the opening of an abortion clinic in our neighborhood.

所以，我非常反对在附近开一家专门堕胎的诊所。

youdao

Instead of fighting for democratic rights, in other words, the People's Alliance is protesting against them.

换言之，人民联盟现在是反对民权而不是为民权而战。

youdao

Israeli police are holding back hundreds of men protesting against women praying at Jerusalem's Western Wall.

WSJ: Ten Things to Know Today

People protesting against the march are to gather in an area next to the A259.

BBC: March for England in Brighton

Campaigners "protesting against the Autumn Statement" have taken part in marches in Manchester and Liverpool.

BBC: 'Anti-cuts' protestors march in Manchester and Liverpool