You are not alone in asking that question: How is it possible that we can be so antagonistic towards conservative traditional Christianity and yet so accepting Islam?
I think we have to understand that there has been a revolution in the US and the West in general. An ideological revolution for neoliberalism.
Neoliberalism is dedicated to scientific rationalism, that's neoliberal conception of life: science, biology, chemistry, physics, mathematics, that’s it. Everything else is the matter of your own personal opinion. When that began to make its way into our culture and policy, in the 1960-s in particular, it gave rights to something called "emancipatory politics". The emancipation has to be freedom or liberation.