What were the events that led to the race riots of 1964(Jim)

The events that led to the race riots on 21 july 1964 happened when 25000 Malays went to celebrate the Prophet Mohammed's birthday.However,the celebrations soon turned into a race riot.A policeman was attacked by a group of Malays which were separated from the rest of the group,the policeman was attacked when he ask them to rejoin with the rest,they also attacked Chinese passer-by and spectators.A curfew was impose to restore order until 2 August 1964 and it was only lifted for short periods of time for people to buy food.Another riot happened on September and a curfew was imposed to stop the riots.