True. Hate and fear are potent tools for controlling people, hence, religion.
Fear worked very successfully for all the Abrahamic religions, national and international politics and even in the family home - fear of violence, fear of being left alone or withdrawal of financial support.
I tend to find fear most often leads to hate
Yeah, probably. Especially when tribalism is involved. When humans understand that all of culture; religion, government, even money is intersubjective belief we could get along better.
I'm going to go all Yoda here - hate can often lead to fear, young Jedi.