New Zealand was ill-equipped to cope with the Western Samoa mandate allocated by the League of Nations in 1920. The Mau movement's passive resistance culminated in the violence of ‘Black Saturday’, 28 December 1929, which left 11 Samoans and one New Zealand policeman dead.
On 4 June 2002 Prime Minister Helen Clark offered 'a formal apology to the people of Samoa for the injustices arising from New Zealand's administration of Samoa in its earlier years'.
Not all Samoans supported the Mau. Even Mau estimates suggest that, at the height of its popularity, at least one in ten Samoans supported the New Zealand administration.