Sometimes ADHD kids will continue their behavior. You can bring in more behavior modification strategies. When they are mad, you want to reinforce, reinforce and reinforce again what the appropriate behavior is, and that really is the best thing to do. The fact is that if you have been a good loving parent, you have enormous power over your child. If you tell them to stop doing something, just your persisting and not getting sucked into endless back talk will get you what you want.
Kids are no longer afraid of their parents.
If we want to do it without harsh punishment, we will get some back talk but we will also get better kids. I really don't think so. That is the secret of parenting. If your aim is to get the least amount of fussing at the time and future, the most effective thing you can do is to immediately seal yourself off and become absent. When children are not getting their way, they feed off of parent response.