Protestants are hated as much as Catholics. Ask the Buddhists how the Chi-coms treat them. Ask the Jews how things are going for them in the world.
The most tolerated and power dominating religions on the earth today are atheists, Satanists and Islamists. These groups hate the sight and sound of all Christians and Jews.
Because the sight and sound of Christians and Jews reminds the atheists, Satanists, and Islamists that their belief systems are NOT from God.