The best way to regulate speech is through social controls. That means the withering contempt of adolescent girls should be cultivated towards the symbols of error. Currently anyone who displays a swastika in America can be properly treated with public contempt and will find no sympathy from a judge if they go crying about their hurt feelings. However displaying the hammer and sickle of communism is accepted as a fashion statement. Objectively (as the partisans of the old left used to frame their discourse) both symbols represent ideologies of hatred and violence. When out education system and popular culture create a climate that rejects all symbols of terror then the world will be a better place. This does not demand the imposition of such values by the force of law but does call for the constant adjustment of societies norms by those in positions of leadership.