41.   The riots began after trouble makers moved from the Feyenoord stadium to the Coolsingel in the city center, the traditional spot for championship celebrations.

42.   The riots began as protests against a possible U.S. attack on Iraq over the issue of U.N. weapons inspections.

43.   The riots began in April after a Berber student was shot and killed while in police custody.

44.   The riots began with demonstrators throwing stones and firebombs at Israeli troops guarding the tomb, then quickly escalated into a firefight between the Israeli troops and Palestinian police.

45.   The religious riots began when a Muslim mob set fire to a train carrying Hindu pilgrims.

46.   The recent riots began on Friday when Christian attackers hurled gasoline bombs at houses and fought Muslim gangs with spears and knives.

47.   The riot apparently began when police tried to stop youths who were racing their motorbicycles through the city center in noisy protest over the soccer defeat.

48.   The riot began after youths threw stones at patrol cars, cable news channel SIC Noticias reported.

49.   The riots began after an argument between a Muslim customer and a Christian shopkeeper.

50.   The riots began early Sunday in the heart of northern Israel.