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 attitude that tribalism was backward and retrograde; his positive attitude toward tribal society frustrated some of Kenyatta's Marxist Pan-Africanist friends in Britain, among them Padmore, James, and Ras T. Makonnen, who regarded it as parochial and un-progressive. Assensoh suggested that Kenyatta initially had socialist inclinations but "became a victim of capitalist circumstances"; conversely, Savage stated that "Kenyatta's direction was hardly towards the creation of a radical new socialist society", and Ochieng called him "an African capitalist". When in power, Kenyatta displayed a preoccupation with individual and "mbari" land rights that were at odds with any socialist-oriented collectivisation. According to Maloba,