I can answer this very simply: why not? Why not question religion? Why not expose the harm it causes?
Now let me show you how what you said sound like in different context.
Some Swiss people have planned a terrorist plot to kill hundreds of innocent people. Switzerland is a terrorist country. This logic is terribly flawed very much like your statement. If churches have in any way used religion for their own benefit, and have caused murders to many, this is not Religion's fault, it is their fault.
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