Madonna has sparked controversy on the political front after featuring a scathing video attacking Republican presidential candidate John McCain during her Sticky and Sweet World Tour, which she kicked off in Cardiff, Wales on Saturday night.

During her performance of the song “Get Stupid,” Madonna displayed photographed images of global warming, destruction, Zimbabwe President Robert Mugabe, Adolf Hitler, and Senator McCain. Later in show, Madonna compared photos the John Lennon, Mahatma Gandhi, Al Gore, and Democratic nominee for president Barack Obama.

“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,” McCain campaign spokesman Tucker Bounds said in a statement to Fox News on Sunday.