Almost all world religions preach some form of the Golden Rule. We should all strive to be good to each other and treat others as we want to be treated ourselves, and most religions recognize that. We need to stop hating each other over our differences, and instead come together over our similarities. To insist that wanting to find common ground with people of other faiths is something evil or diabolical is a huge lie that many of us are told.
Only a very few religions do not believe in or practice the Golden Rule. Satanism generally doesn’t, but Anton LaVey’s version of Satanism (which is really just libertarianism dressed up with some “black magic” and its own “bible” — LaVey Satanists are actually atheists) does ask its followers to at least not hurt others or destroy the environment while you’re busy being a selfish SOB. Most Pagan religions, including Wicca, follow some form of the Golden Rule too. Many atheists also practice the Golden Rule as a matter of personal choice. I think it’s ridiculous to suggest that a person can’t have morals or a conscience unless they believe in God or some higher intelligence. Some of the most moral, caring, and compassionate people I can think of are atheists and agnostics.
There have been many violent and hateful religions as long as mankind has been on earth, but today the two most obvious examples that come to my mind are the twisted extremist perversions of Islam and Christianity known respectively as radical Islam and Christian Dominionism, both which seem to regard the Golden Rule as sinful or wrong and prefer to use the rhetoric of fear, terror, war and battle to achieve domination. I have heard there’s an extremist branch of Hinduism that is like this too. There may be others. There are certainly many cults as well with nefarious goals and anti-social doctrine.