They hurled defiant taunts at the riot police, who responded in kind.

他们对着防暴警察愤然大骂，对方也以牙还牙。

《柯林斯英汉双解大词典》

After about 10 minutes the riot police arrived.

大约10分钟之后，防暴警察就到了。

《柯林斯英汉双解大词典》

As the riot police approached the crowd backed off.

防暴警察靠近，人群就往后退却。

《牛津词典》

Police stopped him. The protestors then pushed forward in what police later called a riot.

VOA: special.2010.06.24

In 2007,several United fans were hospitalized with stab wounds and up to 18 were injured inside the Olympic Stadium after clashes with riot police.

VOA: standard.2009.05.26

But before the censorship, dozens of homemade videos were able to be posted to the Facebook website showing demonstrators being beaten by riot police and shouting "down with the dictator."

VOA: standard.2009.06.14

Some threw petrol bombs at the riot police, who responded with tear gas and water cannons.

BBC: Clashes as Chile students march for education reform

On Tuesday, many of the riot police stationed just outside Red Square were fast asleep.

BBC: So far, so peaceful in Moscow

An hour later the riot police moved in, arresting Mr Navalny and some 260 others.

ECONOMIST: Russia��s presidential election