"Biko" reached No. 38 on the British charts, and was positively received, with critics praising the instrumentation, the lyrics, and Gabriel's vocals. A 2013 commentary called it a "hauntingly powerful" song, while review website AllMusic described it as a "stunning achievement for its time". It was banned in South Africa, where the government saw it as a threat to security. "Biko" was a personal landmark for Gabriel, becoming one of his most popular songs and sparking his involvement in human rights activism. It also had a huge political impact, and along with other contemporary music critical of apartheid, is credited with making resistance to apartheid part of western popular culture. It inspired musical projects such as "Sun City", and has been called "arguably the most significant non-South African anti-apartheid protest song".