You do realize that pathologically disturbed individuals who lead a life of crime begin by hurting animals, right?
You have a son who lacks empathy and compassion, the two traits that disturbed people have who end up hurting people.
I would take that tape to the police and have your son suffer the consequences of animal cruelty. Then, while in court, you should beg the judge to order psychological help for your son. He could be the next last face people see before they die.
If I had people in my house that did not put their dishes in the dish washer, I would lock the dish cabinet and tell them to buy their own cookware and paper plates and plastic utensils. All dirty cookware left behind would be put in a bag and stored outside in a designated trash bin so they knew where to retrieve it to clean it for their next meal. I do not put up with bullshit laziness in my house. No way. And, you have to install a camera to see who is not doing dishes? Cra Cra Crazy.