By history?
Stalin, Hitler, Mao and other dictators were hit as children. Saddam Hussein was so abused that he brought a gun to school and shot his teacher to death.
When we stop abusing children, we will no longer be afraid of them passing down their abuse upon others and their own children.
Conservatives, at their best, separate things that should be kept apart.
Liberals, at their best, break down barriers that should never have been there in the first place.
Children who are respected learn respect.
Children who are cared for learn to care for those weaker than themselves.
Children who are loved for what they are cannot learn intolerance.
Only then can they develop their own ideals, which can be nothing other than humane, since they grew out of the experience of love.
All children are born to grow, to develop, to live, to love, and to articulate their needs and feelings for their self-protection.
The more we idealize the past and refuse to acknowledge our childhood sufferings, the more we pass them on unconsciously to the next generation.