One of the most important things child learns in life is to set boundaries so that others will not manipulate him. Teaching children to feel their auras, to be aware of how other people's energy affects them, to clean away the energy that they don't like, or to walk away from it at any time will give them tools of intuitive self-care. It's best to teach children intuitive self-defense and give them tools they can use anywhere, anytime, on their own, to identify trouble and move away from its source.
Personal empowerment
Be conscious of how other people affect them.
child can move away from someone who displays aggression, anger, even dangerous and unsettled
take toxic energy outside (fighting and squabbling) otherwise they must negotiate their quarrels in a civilized fashion inside. Parents should do the same and keep their negativity away form their kids (kids remind the parents otherwise).
the best tool of protection you can ever offer your kids is consciousness. Teaching them how to be conscious of their energy, to be self-loving, to be selective in what they allow to affect them, and to be proficient at clearing their energy will give them tools to keep them safe in the world.