TMZ obtained the security cam footage of 2 Chainz and his crew being robbed at gunpoint in San Francisco this weekend... and the footage shows the chaotic moments as the rapper and his crew desperately ran for their lives. According to police, a cell phone and wallet were stolen from the rapper. After the incident, 2 Chainz denied involvement and said it was a member of his crew, but this video obviously proves otherwise! Check out this crazy video here: