Who are the most controversial and polarizing pop stars of all-time?

Madonna and MJ.

Madonna

Madonna, and it's not even close.

Madonna

Madonna

Natalia Kills

Madonna.

Britney Spears

Madonna .

Madonna

Poll added! Multiple choice also.

Madonna, I guess?

Voted for Michael Jackson, Madonna, Kanye West, and Miley for my generation.

Madonna

Easily Micheal. His child molestation allegations/trials were the most controversial thing any pop star has EVER been a part of by a long shot. Nothing Madonna or any of the rest have done/been attached to even comes close.

Madonna and Kanye

Religious imagery is often most controversial and Madonna often uses it. Kanyes RS cover in 2006 is one of the most contreversial RS covers.

1-MJ
2-Madonna
3-Britney

Basically the pop realm.

Honorable mentions of the last few years are Miley, Gaga and Rihanna.

Agreed! Michael Jackson's controversy was natural and not forced or calculated which made it even more intense and inescapable. Truly disgusting how the media assaulted him.