The two aspects of cognitive abilities (IQ and wisdom) are leveraged by Dr. Harry Chang et al. in The Bell Curve Plus: Intelligence and the War of Civilizations in analyzing the current situation in the United States. After reviewing different cultures, religions, and Jewish history, the authors deduce that the fight between Democrats and Republicans is caused by the different civilizations, which were created by the cognitive abilities of the people. Jewish civilization has collectivism feature and is the opposite of Western civilization, which is based on individualism. Collectivism leads to American Marxism. Through research and analysis of the current affairs, the authors conclude that democracy only works well with a Western civilization. There are some prerequisites for it to work with other civilizations. Further, freedom of religion is politically flawed.