In 1967 , Swann signed a public statement declaring his intention to refuse to pay income taxes in protest against the U.S. war against Vietnam .
Swann was a conscientious objector during World War II and was imprisoned .
In 1967 , conscientious objector signed a public statement declaring Swann 's intention to refuse to pay income taxes in protest against the U.S. war against Vietnam .
Swann was a conscientious objector during World War II and was imprisoned .