 Events escalated over the following week, culminating in an article in the Utusan Melayu on 20 July 1964 titled 'Challenge to all Malays to all Malays – UMNO Youths; Lee Kuan Yew Condemned; Teacher forced student to smell pork - Protest'.The day after on 21 Jul 1964, Racial riots broke out during the celebratory procession of Prophet Mohammad's birthday near Kallang Gasworks, resulting in 4 deaths and 178 injured at the end of that first day, and 23 deaths and 454 injuries by the time the riot was quelled.More riots had also broke out in September 1964.