Christians celebrate rape, torture, slavery and genocide.

[Undeceived]

If you owned 10,000 cows, and a 1/3 of them were sick with a disease that would wipe out the whole flock and you decided to separate them from the rest of the flock and kill them, is it considered murder (by sane people?)

No. Doing it because the cows didn't praise me enough would be murder.

A better analogy would be killing the cows which hurt others and which ignore the voice of the one who feeds them. Now suppose all the cows hurt others, but the owner says "I forgive you and will let you live if you accept my forgiveness. Not only will I let you live, I will take you to the greenest pasture you have ever seen." Inexplicably, 1/3 of the cows ignore the owner's presence. Maybe for a while they can keep hurting fellow cows for their own pleasure, but they will never reach that pasture or get to know their wise owner.