The 1981 South African tour to New Zealand sparked a protest movement against South Africa's apartheid policy; this type of protest had not been seen in New Zealand since the 1951 waterfront dispute. The NZRU had invited the Springboks to tour because the Muldoon government refused to involve politics in sport. Although New Zealand won the test series, two of the tour's provincial games were cancelled and the whole tour was marred by violence and protest. The third and final test match of the tour is sometimes known as the Flour Bomb test, as an anti-apartheid activist in a Cessna light aircraft dropped leaflets, flares, a parachute-supported banner reading "Biko", and flour bombs, into Auckland's Eden Park throughout the match, felling a New Zealand player. The country experienced unrest during the tour, which had a significant impact on New Zealand society.