Powell delivered his Rivers of Blood speech on 20 April 1968. A poll which was taken after the speech reported that 74 per cent of Britons agreed with Powell's opinions on mass immigration. In "The Trial of Enoch Powell", a Channel 4 television broadcast in April 1998, on the thirtieth anniversary of his Rivers of Blood speech (and two months after his death), 64 per cent of the studio audience voted that Powell was not a racist. Some in the Church of England, of which Powell was a member, took a different view. Upon Powell's death, black Barbados-born Wilfred Wood, then Bishop of Croydon, said "Enoch Powell gave a certificate of respectability to white racist views which otherwise decent people were ashamed to acknowledge".