It's better for them to learn how to deal with abusive cops now when they don't look old enough to get shot for being disrespectful.

Bullies with guns are more and more common and that won't probably change when your kids grow older. Prisons need to continue to bring profits and there's too much money to be made in justice system and enforcement. Learning how to deal with self-righteous maniacs with guns might save their lives some day.