As is the point of the thread, when an atheist criticizes religion, they're usually referring to Christianity. The world constantly attacks the Bible, Biblical Christianity, Jesus, evangelicals, etc,. While Islam is called a religion of peace, Judaism can hardly be brought into question without someone bringing up the holocaust, and eastern religions (Hinduism, Buddhism) are considered the best religions: harmononious, etc. (Though Siddharth Gautama never meant his philosophy to be considered a religion, and certainly never meant to be deified; people like to call Buddhism a religion.)
So, we're left with people damning Christianity and nothing else. Though there are those honest people who condemn all religions, but always end up damning Christianity and it alone.
This is why Christians view it as attacks by the devil. The Bible says that the world will hate us, but not because of us; they'll hate us for who we worship. That doesn't meant that everyone on earth hates Christians: it simply means we're hated in general.
That little prediction has been fulfilled.