Is it ok to bully your child because he is a failure?

Someone has invested a lot of money in to their son who turned out to be a failure in life. She looks at him with disgust and disappointment. She looks down on him but never disowned him but takes all her anger and frustration out on him by constantly making fun of him, looking for ways to demean humiliate and invalidate him. She won't accept the fact that her son is simply not a successful bright person.

Is it ok to bully your child because he is a failure?
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