1.   An apparently minor incident sparked off rioting.

2.   This incident sparked violent demonstrations outside the airbase.

3.   Frank also joked that the incident may spark a public relations battle as other papers try to get themselves banned from the House floor.

4.   Humphries denied the accusation, but the incident sparked student withdrawals from school, marches and a federal civil suit.

5.   That incident has sparked fears that more bogus releases will roil the markets.

6.   The incident has also sparked tension between the Pentagon and other government agencies.

7.   The incident sparked a flurry of negative publicity and sent new orders for the car plummeting.

8.   The incident sparked a national debate about the use of the military to patrol the U.S.-Mexico border.

9.   The incident sparked a weeklong internal investigation that extended to several high-ranking police officials and included allegations that jail inmates were used regularly to don the dog suit.

10.   The incident sparked vocal criticism of the Police Department from the minority community.