Police cordoned off the riot zone and some police vans were used to control the mob.

He never tried to hide his emotions whether in parliament or in a riot zone.

It invited foreign media to Xinjiang to tour the riot zones, visit hospitals, and look at the aftermath themselves.

Half-a-dozen fistfights were in progress and a medi-van was just arriving at the edge of the riot zone.

Firestone was a riot zone back in '65.

So much tear and vomit gas was used that not even the police could enter the riot zone.

They were moving slower and slower up the street as they approached the riot zone.

With Los Angeles recovering from a deep recession, the overall number of jobs in the riot zone is up since 1992.

The police were instructed they could not enter the riot zone, so they did not intervene.

There are bus routes in London that go through trendy areas and then continue on to what a few weeks ago was a riot zone.