It was a newer horror movie, I believe the cover was what looked like one of the killers wearing a Mickey mouse like sack hood. A family buys a house or summer home in the woods and this "family" of psychos surrounds the house and starts to terrorize this family, they take one of the children hostage and start to torture the Dad. I think (not sure) that everyone in the family but the child dies. At the end the police show up and are taking the child back when the squad car gets hit and the lead group of the psychos kills the policemen and takes the child back. The killers constantly talked about how the leader had saved them and given them a "family", and they try to brainwash the kid.