As folks stated, it wasn’t his truck anymore. Repo guy had every right and the headline doesn’t tell the story. This would be more correct:
“Man Dead by Cops After Pulling Gun on Truck Repo Man”
Not according to the law. Even with a legally justified repossession, if the customer says: "Don't repo my car!" the agent HAS to stop. He can come back another time, but that repo then is over.
Just telling you what the law is.