Do we include non secular terrorism and governments in that, or do they have to shout for atheism. Religion can be used to do bad things, just like many other aspects in life. It is not unique by any stretch of the imagination. It is down to people rather than "religion" especially as that word encompasses so many different beliefs and ideals.
The problem mostly that, for example Bush said a lot of stupid things in his time, but when he started to include religion into furthering his goals in the middleeast, frankly that is hardly painting a good picture.
The thing here is that "God" is painted everywhere in the US and when you use it in speeches and the likes, your support increases quite a chunk, even if it is for doing rather nasty things even when its quite obviously against the religions ideals in the first place, it just cries out the same thing that happened back when Europe split in half from the Catholic church at the time.
Whether people like it or not, humans focus on the bad things that others do and that paints an image, there may be a few nice Christians/Muslims/Jews but vast parts of the world are unfortunately uneducated and some what unintelligent.
The majority always ruins it for the minority, sometimes it changes but it never lasts, that's humanity (whether religion was involved or not, is not totally relevant).
I would go further into this, but silly people would only understand the bits they disliked, hide behind an illusionary wall of a book and attack me with nonsense.