In the moment when I truly understand my enemy, understand him well enough to defeat him, then in that very moment I also love him.
I agree that it is not just the extremists who harbor bad thoughts or engage in bad acts, but they are usually the source of the polarization and try to keep education and communication of the main stream from moving forward.
I remind everyone: Whether you school them at home or send them to school, you as a parent have the responsibility to make sure they learn and behave. Teachers and principals may help, but parents are the ones who must accept responsibility.