Quote Originally Posted by Sarmatian View Post
The west didn't become more tolerant because of Christianity, but rather when we stopped to listening those weird guys in robes. When we thought religion was important we committed genocides, exterminated entire cultures and happily slaughtered each other to decide whose branch of Christianity was the coolest.
The USSR stopped listening to guys in robes and started exterminating them, especially in 1920-1930s. It also can boast of ethnic cleansings (= removing whole nations from their homes) and slaughtering the dissident. So moving away from religion doesn't automatically make a society more tolerant.

Quote Originally Posted by Sarmatian View Post
Muslim societies can be secular. For proof, I point out overwhelmingly Muslim but mostly secular and tolerant ex Soviet central Asian republics. Kazakhstan is a much better example than Turkey in this regard, as it has a far greater ethnic and confessional diversity, yet there is almost no violence.
I don't think Khazakhstan is a good example, because after the collapse of the USSR there were ethnic tensions between the Turkic and the Slavic communities which eventually made thousands of the latter leave the country for Russia and Ukraine.
Now such things are not heard about any more, yet in case Russia (Zhirinovsky already does it on occasion) propels its interest ethnic tensions (possibly with a religious admixture - if ISIS takes a hand) will be awake in no time.