NEW : Obama aide says tape used to justify ` ` slaughter of innocent people '' , allegedly of Osama bin Laden claims al Qaeda behind terror attempt . That line 's never gotten them much in the past , and it 's unlikely to now , either . '' ` ` The United States will not dream of public safety '' bin Ali purportedly says . Tape released on the Arabic - language news web site Al Jazeera .
NEW : Obama aide says tape used to justify ` ` slaughter of innocent people '' , allegedly of Osama bin Laden claims al Qaeda behind terror attempt . ` ` The United States will not dream of public safety '' bin Ali purportedly says . Tape released on the Arabic - language news web site Al Jazeera .