"They did it so it's OK if we do it too."

Even the 8yr olds I coach know better than that.

Muslims, Christians, Jews,..........they've all been killing each other for thousands of years.

What's a thousand more right?

Aunty, as long as they are people with your mind set content with the status quo, we'll continue to reap what we sow. (Ha! I'm a poet and didn't even know it.)

God help us all if that's the case.
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On a long enough timeline the survival rate for everyone drops to zero.