When Salma Hayek walked the Cannes Film Festival red carpet holding up the sign “Bring Back Our Girls”, the cast of “The Expendables” followed suit the next night — even if some of them didn’t know what the slogan was about. Co-star actor Kellan Lutz said, “I remember Victor (Ortiz) was like, ‘What were those signs?’ and I had to fill him in.'” Ortiz, Hayek and others helped spread the message, a plea for the return of nearly 300 girls kidnapped in Nigeria by the Islamist extremist group Boko Haram, by using one of the most famous media events in the world.