Madonna proved once again that sparking controversy is definitely her thing. However, the Material Girl did not count on sex or religious issues this time, as she preferred to turn to politics. Notwithstanding the fact that celebrities and political matters don’t really have common ground, the pop icon kicked off her Sticky & Sweet world tour on Saturday night lashing out at Senator John McCain.

That surely drew some attention, I’d say.

During her four-act show which took place in Millennium Stadium in Cardiff, Wales, Madonna chose to display a couple of political montages while performing “Get Stupid.” The much talked about video interlude included a sequence of images bringing together shocking representations of destruction and global warming on the one hand, and Nazi leader Adolf Hitler, Zimbabwe’s dictator Robert Mugabe and Senator John McCain, the presumptive Republican presidential candidate, on the other hand.

Nevertheless, Madonna didn’t stop here. Another montage played later on in the show depicted slain Beatle John Lennon, environmental activist Al Gore, Mahatma Gandhi and alleged Democratic presidential candidate Senator Barack Obama all together.

That wasn’t very obvious, was it, Madonna? More than 40,000 fans were present at the singer’s show and, ready or not, they found out whose side Madonna was on.

Obviously, John McCain’s people were not at all pleased with the superstar’s little games, finding the links offensive. “The comparisons are outrageous, unacceptable and crudely divisive all at the same time. It clearly shows that when it comes to supporting Barack Obama, his fellow worldwide celebrities refuse to consider any smear or attack off limits,” the senator’s spokesman Tucker Bounds said, as quoted by Fox News.

In addition to this, the controversial comments went even further: “It’s a disappointing and vulgar attack on John McCain, who has devoted his life to the cause of freedom and the fight against tyranny,” Taylor Griffin, another spokesperson for the Republican said, according to the Los Angeles Times.

The 50-year-old singer is known for her contentious and divisive shows, as she constantly uses disturbing videos or language in her concerts. For instance, she used images that offended the Catholic Church a few years ago and, on her last tour, she displayed Kabbalah images, thus upsetting Jews.

Moreover, Madonna was involved in a verbal quarrel with renowned musician Elton John, who claimed that Guy Ritchie’s spouse lip-synched to music recordings while performing her so-called live acts. However, the star said that some of the yoga moves she made on stage were an impediment to live singing, giving Elton John the chance to say that fans did not pay to learn yoga, but to attend a singing concert.

Madonna’s latest show was split into four different parts: “gangsta pimp, rave, gypsy and old school.” Her stage outfits were selected from the 3,500 items of clothing reportedly created by 36 designers exclusively for the pop icon’s world tour.

She is expected to perform in more than 50 locations, including 16 stages in Europe. The Sticky & Sweet Tour continues through Europe until the end of September and debuts in the United States on October 4 in New Jersey. Madonna is scheduled to perform in San Diego on November 4, Election Day.