I love how you have to go back 1600 years to find an example of Christians being assholes. Meanwhile, today, _every single day_, islam kills, tortures, maims, and rapes.
Not good enough for you? Christian faith requires that you love each other; killing is one of the worst imaginable crimes. Islam requires that you hate all who are not muslim; killing others is mandatory according to the quran.
DON'T pretend that "all religions are equally wrong"; they are not. Most of the world's religions are (relatively) peaceful, and will generally leave non-members in peace (neither Boeddhism nor Christianity requires the death of non-believers, and you cannot even become a Jew or hindu except by birth even if you wanted to). There is one major exception to this rule: islam, the very name means "submission", requires that _everyone_ submits and becomes a muslim. And its followers are not only required to use violence to make it so, they are also more than happy to commit atrocious acts to get their way.
The greatest weapon against islam is education. A succesful, educated woman who has become a public figure simply cannot be suffered to live; her example threatens the entire power structure of islam. And that, in a nutshell, is why this poor, courageous woman was murdered.