The turning point came on 4 January 1959, when Belgian administrators dispersed a large crowd of ABAKO supporters who had gathered in Léopoldville to attend a political meeting. ABAKO had sought permission to hold the gathering at the city's YMCA building; when colonial officials denied the meeting and the crowd assembled anyway, authorities intervened forcibly. The resulting
widespread rioting brought extensive plunder of European-owned property. When order was finally restored, at the price of an exceedingly brutal repression, the official casualty figures stood at 49 Congolese killed and 241 wounded, though some estimates placed total casualties considerably higher. Colonial authorities arrested several ABAKO leaders, including Kasa-Vubu,
Daniel Kanza, and Simon Nzeza Nlandu, charging them with incitement to riot. A week after the riots, on 13 January 1959, the Belgian government formally recognised independence as the ultimate goal of its colonial policies. King
Baudouin I announced: "It is our firm intention, without undue procrastination, but without fatal haste, to lead the Congolese forward to independence in prosperity and peace." Although no precise date was set, the tide of nationalist sentiment could not be stemmed, and the
Belgian Congo formally attained independence on 30 June 1960. ==Ethnic nationalism and political competition==