All religions do not come into this world looking for a fight. But some do. Unfortunately, those that do have a certain practical advantage. To understand this advantage, think of religions that are not inclined to violence as being like people who are not inclined to violence, and think of religions that are inclined to violence like people with that inclination. When they come into contact with those who are not inclined to violence, those who are inclined to violence have a tendency to come out on top. And once on top they have another tendency, as described so well by J. William Fulbright:
Power tends to confuse itself with virtue and a great nation is particularly susceptible to the idea that its power is a sign of God's favor, conferring upon it a special responsibility for other nations – to make them richer and happier and wiser, to remake them, that is, in its own shining image. Power confuses itself with virtue and tends also to take itself for omnipotence. Once imbued with the idea of a mission, a great nation easily assumes that it has the means as well as the duty to do God's work.
A very important thing to be aware of, though, is that religion itself is not inherently violent and intolerant. In fact, for most of human history there were no religions that viewed other religions as enemies. One can go even further and posit that intolerance is inimical to religion itself, properly speaking, and that those "religions" that are systemically intolerant, that is, those for whom "the truth to be proclaimed comes with an enemy to fight" are not religions at all, but are rather more accurately described as counterreligions.
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