Images have appeared on social media showing protesters hurling petrol bombs at security forces.

社交媒体上出现的照片显示，抗议者向安全部队投掷了汽油弹。

Petrol bombs and bricks have been thrown and cars were smashed.

汽油弹和砖块被投掷，汽车被砸碎。

And that's mainly because it's a petrol bomb on wheels.

这主要是因为它是装在轮子上的汽油弹。

Most are fairly peaceful, although police have been pelted with bricks and petrol bombs (and by blocking roads and covering their faces, protesters are breaking the law).

警察在处理冲突时，遭到了砖块以及燃烧弹的袭击，但大部分反对者都相当平静（他们破坏法律，阻断道路，蒙面）。