The group's big break arrived when their second album, "Toxicity", debuted at No. 1 on the American and Canadian charts, despite the events of 9/11. The album has eventually achieved 3x multi-platinum certification in the United States It was still on top in America during the week of the 9/11 attacks and the political environment caused by the attacks added to the controversy surrounding the album's hit single "Chop Suey!" The song was taken off the radio as it contained politically sensitive lyrics according to the 2001 Clear Channel memorandum at the time such as "(I don't think you) trust in my self-righteous suicide." Regardless, the video gained constant play on MTV as did the album's second single, "Toxicity". Even with the controversy surrounding "Chop Suey!" (which earned a Grammy nomination), System of a Down still received constant airplay in the United States throughout late 2001 and 2002 with "Toxicity" and "Aerials". In May 2006, VH1 listed "Toxicity" in the number 14 slot in the "40 Greatest Metal Songs".