Kenya African National Union nonetheless decided to remove all provisions of a federal nature from the constitution. Kenya became independent on December 12, 1963, and the next year became a republic within the Commonwealth. Jomo Kenyatta, head of the Kenya African National Union, became Kenya's first president. KADU dissolved itself voluntarily in 1964 and joined KANU after a strong lobbying by Tom Mboya. A small but significant leftist opposition party, the Kenya People's Union (KPU), was formed in 1966, led by Jaramogi Oginga Odinga, a former vice president and Luo elder. The KPU was banned and its leader detained after political unrest related to
Jomo Kenyatta Kikuyuland following World War I, among them the campaigns of Harry Thuku and the East African Association, resulting in the government massacre of 21 native protesters in March 1922. Kenyatta had not taken part in these events, perhaps so as not to disrupt his lucrative employment prospects. Kenyatta's interest in politics stemmed from his friendship with James Beauttah, a senior figure in the Kikuyu Central Association (KCA). Beauttah took Kenyatta to a political meeting in Pumwani, although this led to no firm involvement at the time. In either 1925 or early 1926, Beauttah moved to Uganda, although remained in contact