22 June 1966
On 22 June 1966 South African Bishop Alphaeus Hamilton Zulu, is refused a passport and thus permission to attend an international church conference by the South African government. Zulu had been elected President of the World Council of Churches (WCC) in the early 1960's and the world conference on 'Church and Society' was planned for July. During the Apartheid era the South African government regularly refused passports, and thus international travel, to those opposed to its policies. Journalists, photographers, activists and other potentially "dangerous" South Africans, including the outspoken cleric Bishop Desmond Tutu, were restricted in this manner.
References

 Irvin, D.T.,(1994), Hearing Many Voices: Dialogue and Diversity in the Ecumenical Movement,(University Press of America)p.102