The extinction of Jews and Muslims would not improve the government of antisemitic and Islamophobic Westerners

Did Europeans get on with each other when Europe was Christian and monoracial?

Did Americans get on with each other when white Christians were the dominant race in America?

Since I know the answer to the last two questions to be no, the conclusion must be that the extinction of Jews and Muslims would not noticeably improve the lives of Westerners.