In the UK, criticism largely faded with the band's international breakthrough, as commentators recognised the Beatles' value to the economy. Some traditionalists were nevertheless outraged by the group being awarded MBEs, and the Beatles, as with rock music in general, remained the target of figures such as "Daily Mail" columnist Monica Furlong and conservative activist Mary Whitehouse. In 1967, Whitehouse campaigned against the lyric "Boy, you've been a naughty girl, you let your knickers down" in the Beatles' song "I Am the Walrus" after the BBC had aired the song as part of the band's TV film "Magical Mystery Tour". The BBC duly banned the song. The following year, Lennon's relationship with Japanese avant-garde artist Yoko Ono, for whom he abandoned his wife and son, was met with strong public disapproval and racial abuse. Lennon received further condemnation from conservatives when he returned his MBE to the Queen in November 1969. He cited his opposition to the British government's support of both US involvement in the Vietnam War and Nigeria's role in the Biafra conflict, in addition to the poor chart performance of his and Ono's second Plastic Ono Band single, "Cold Turkey".