She claims that the police have a 'vendetta' against her. [=that the police are deliberately and unfairly trying to cause trouble for her]
He waged a personal 'vendetta' against his rivals in the Senate.
(..) - Why? What happened? - He was a Marine. He got killed last year in this covert action that I ordered. Would he do this for a personal vendetta? He said he wanted you alive. There's gotta be a bigger play. We gotta get out of this elevator shaft. I'm... Don't tell me you're claustrophobic. (..)2013 White House Down