I mean, you can distort/twist an ostensibly peaceful religion like Christianity into something insidious and outright evil. A lot of atrocities have been committed by devout and pious leaders who claimed to follow a deity/prophet with a peaceful/loving message, so it's unsurprising that it's still a feature of modern religions.

There was a point in time where the Islamic world was a world leader in math, science, and technology. Of course, like with anything, time and money corrupts all things. Oil especially taints everything it touches.