Vedder sometimes comments on politics between songs, often to criticize U.S. foreign policy, and a number of his songs, including "Bu$hleaguer" and "World Wide Suicide", are openly critical of the Bush administration. At Lollapalooza 2007, Vedder spoke out against BP Amoco dumping effluent in Lake Michigan, and at the end of "Daughter", he sang the lyrics "George Bush leave this world alone/George Bush find yourself another home". In the beginning of the second encore Vedder invited Iraq war veteran Tomas Young, the subject of the documentary "Body of War", onto the stage to urge an end to the war. Young in turn introduced Ben Harper, who contributed vocals to "No More" and "Rockin' in the Free World". The band later discovered that some of the Bush-related lyrics were excised from the AT&T webcast of the event, and questioned whether that constitutes censorship. AT&T later apologized and blamed the censorship on contractor Davie Brown Entertainment.