[header] How to stop a child abuser in public [title] Show sympathy. [step] The easiest way to stop the abuse is to divert the abuser's attention away from the child. You can show sympathy in a way that doesn't insult either the parent or child. 
For example, think of saying the following : [substeps] " children are exhausting, aren't they? " " you seem like you have your hands full. " " you probably didn't expect he'd have so much energy, right? " " it's a difficult age.