While annotating David Bowie's song lyrics Life on Mars, i read Wikipedia on John Lennon (1940-1980), i learned that in his time he had a decade-long, widely publicized, major conflict with the US government regarding his deportation as means to silence his anti-war activities in US, and that he is murdered. Here's some selected quotes from Wikipedia:
In 1976, Lennon's U.S. immigration status was finally resolved favourably, after a years-long battle with the Nixon administration that included an FBI investigation — a full-scale effort involving surveillance, wiretaps, and agents following Lennon around as he travelled. Lennon insisted that the investigation was politically motivated, a claim that was later proven true.
Nixon left the White House after the Watergate scandal, and Lennon won his green card in 1975. After Lennon’s murder, historian Jon Wiener filed a Freedom of Information request for FBI files on Lennon. The FBI admitted it had 281 pages of files on Lennon, but refused to release most of them, claiming they were national security documents. In 1983, Wiener sued the FBI with the help of the American Civil Liberties Union of Southern California. The case went to the Supreme Court before the FBI settled in 1997 — releasing all but ten of the contested documents. The story is told in the documentary The U.S. vs. John Lennon, by David Leaf and John Scheinfeld, released in theatres in September 2006 and on DVD in February 2007. The final ten documents in Lennon's FBI file were finally released in December 2006. and are available on the web.
Lennon is a true folk hero of humanity.