John Lennon was a very controversial figure. From his activism to his songwriting, he was someone who was an easy target for censorship. His song "Imagine" was targeted after the 9/11 attacks in 2001, and in 1991 during the Gulf War.
Ironically, this is a song about peace. But the line, "imagine there's no heaven" had religious groups up in arms. The censorship didn't stop the song from being a chart-topping smash hit.
Madonna has always been controversial but this next song (and music video) caught the Vatican's attention
