If Israel were doing nothing wrong, if it had the ability to show with reasonable argument that it was doing nothing wrong, it would not need to go to such efforts to shield its young people from undesirable viewpoints. If it were trying to educate them to be thinkers and pursuers of justice, it would welcome all viewpoints. Instead it is banning advocates for peace and nonviolent rational debate and conflict resolution — violating basic principles of liberalism and also violating the law.