My response:
Religions are belief systems that are meant to guarantee a peaceful society. Therefore any religion is unacceptable if, as a result of it, enough people act violently enough to disrupt peace in our global society. Obviously Christianity and to a bigger extent Islam are examples of this. Since both the Koran and Christian Bible contain passages that promote violence, inequality, etc any society that follow either of those texts will contain some violence, inequality, etc. This means Christianity and Islam are unacceptable as belief systems if a peaceful society is the goal.

If it is argued one should blame the interpretations of the passages in the bible or Koran that promote violence, inequality, etc it should be pointed out that to not have violence, inequality, etc as a result is impossible since at least some people will tend to read things literally.

My snarky response:
As an analogy consider a recipe for brownies that contains only 1% feces. It's only 1%, a small minority compared to the rest of the 99% chocolatey goodness. Is it the feces or the recipe that is the problem?