Most Controversial Metal Bands of All Time

The Top Ten
1 Mayhem Mayhem is a Norwegian black metal band formed in 1984 in Oslo, regarded as one of the pioneers of the Norwegian black metal scene. The band is also known for the infamous events surrounding them including the 1991 suicide of vocalist Dead (in which former guitarist Euronymous took pictures of Dead's ...read more.
2 Cannibal Corpse Cannibal Corpse is a American death metal band from Buffalo, New York, formed in 1988. The band is known for their graphic album covers, explicitly violent lyrics and song titles like "I C** Blood" The group got into mainstream after performing the song "Hammer Smashed Face" in the 1994 film Ace Ventura: Pet Detective. In 1995, vocalist Chris Barnes left the band to focus on his new death metal project Six Feet Under. He was replaced by George "Corpsegrinder" Fisher of the band Monstrosity, who has remained as the frontman since. ...read more.

No explanation needed.

3 Marilyn Manson Marilyn Manson is an American rock band from Fort Lauderdale, Florida. Formed in 1989 by frontman Marilyn Manson and Daisy Berkowitz, the group was originally named Marilyn Manson & the Spooky Kids with their theatrical performances gathering a local cult following in the early 1990s. ...read more.
4 Suicidal Tendencies Suicidal Tendencies is an American crossover thrash band founded in 1980 in Venice, California by vocalist Mike Muir, who is the only remaining original member of the band. The band is often credited as one of "the fathers of crossover thrash".
5 Slipknot Slipknot is an American metal band formed in Des Moines, Iowa in 1996. The band is best known as one of the pioneers of the New Wave of American Alternative Metal during the late 1990s - 2000s and are distinguishable by the band's clothing choices, consisting of black/red jumpsuits and horror inspired masks. ...read more.
6 Slayer Slayer was an American thrash metal band from Huntington Park, California, formed in 1981 by guitarists Jeff Hanneman and Kerry King. They rose to fame with their 1986 album Reign in Blood, and is credited as one of the big four of thrash metal bands, the others being Metallica, Megadeth, and Anthrax. ...read more.

According to this list Slayer Is less controversial than Slipknot...

7 Black Sabbath Black Sabbath were a Heavy Metal band formed in Birmingham, England in 1968 by guitarist and songwriter Tony Iommi, singer John "Ozzy" Osbourne, bassist and main lyricist Geezer Butler and drummer Bill Ward. ...read more.
8 Sex Pistols The Sex Pistols were an English punk rock band formed in London in 1975. Although they initially lasted just two and a half years and produced only four singles and one studio album, Never Mind the Bollocks, Here's the Sex Pistols, they are considered one of the most influential acts in the history ...read more.
9 Gorgoroth Gorgoroth is a Norwegian black metal band based in Bergen. Formed in 1992 by Infernus, the band is named after the dead plateau of evil and darkness in the land of Mordor (a fictional location in J.R.R. Tolkien's The Lord of the Rings).
10 Behemoth Behemoth is a Polish blackened death metal band from Gdańsk, formed in 1991. They are considered to have played an important role in establishing the Polish extreme metal underground.
The Contenders
11 Anal C*** Anal C*** was an American grindcore band founded by vocalist Seth Putnam in 1988 in Newton, Massachusetts. The band is known for their highly offensive lyrics which included themes of misogyny, homophobia, racism, Nazism, antisemitism, and schadenfreude (ridicule of the unfortunate). Their music has been received negatively by critics, which the band stated that their music was intentionally bad, just to get negative reviews. Anal C*** ended when Seth Putnam died from a heart attack in 2011.

How is this not higher, have you seen the song titles they make?

12 Arghoslent Arghoslent is an American death metal band formed in the summer of 1990. The band's lyrics have been the source of much controversy for advocating racism, particularly promoting white supremacist views of the Trans-Atlantic slave trade and The Holocaust.
13 Grand Belial's Key
14 Ghost Ghost is a Swedish heavy metal band that was formed in Linköping in 2008. The band consists of five masked instrumentalists known as the Nameless Ghouls, and a demonic anti-pope known as Papa Emeritus. They have released four studio albums, one live album, and two EPs. Each album introduces a new version of Papa Emeritus... read more
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