1.   Separating prisoners from each other is sometimes the only way of preventing riots.

2.   I related a similar episode that I heard had happened in Fort Worth in which such a show of shotguns prevented a riot.

3.   Some schools have worked to prevent riots.

4.   Palestinian police commanders said they acted to prevent riots because of concern that Israel would seize some Palestinian-run areas from which stones and firebombs had been thrown.

5.   Palestinian police patrol trouble spots overnight to prevent riots.

6.   As part of an agreement with Israel, Palestinian police patrolled downtown trouble spots throughout the night from Monday to Tuesday to prevent Palestinian riots.

7.   At the second site, Ras el-Amud, Netanyahu had held up construction, apparently hoping to prevent Palestinian riots.

8.   Eye witness reports say that car windows were smashed, and a full scale riot was only prevented by the intervention of local leaders who cooled down tempers.

9.   Extra Israeli troops rushed to the Gaza Strip to protect Jewish settlements and to the West Bank to prevent riots.

10.   International officials criticized Bosnian Serb authorities Tuesday for failing to prevent Serb riots at mosque rebuilding ceremonies, and warned Western aid could be cut as a result.