The late Andrew Breitbart “was truly one of a kind,” David Bossie said Thursday as he introduced Breitbart’s last movie, Occupy Unmasked, at the Conservative Political Action Conference (CPAC).

Breitbart “embodied the essence of a warrior,” said Bossie, president of Citizens United, the conservative advocacy group that produced the documentary film about the anti-capitalist movement that began in fall 2011 with the “Occupy Wall Street” protests.

“This is Andrew Breitbart’s last great work,” said Bossie, recalling that he knew Breitbart for a dozen years before the New Media entrepreneur’s death in March 2012 at age 43. Occupy Unmasked features extensive footage of Breitbart’s confrontations talking about the Occupy movement and of his confrontation with protesters. It also features a number of Breitbart’s allies, including Brandon Darby, David Horowitz, Pam Keys, Anita MonCrief, Mandy Nagy and Lee Stranahan.

After a screening of Occupy Unmasked, Bossie hosted a panel discussion, “The Legacy of Andrew Breitbart,” featuring film director Stephen K. Bannon and Breitbart’s longtime business partner, Larry Solov, as well as other guests.