In most parts of the world photographs are routinely manipulated. Frankly, it wouldn't surprise me if US and European news sources don't do it all the time too, they're just better at it. Honesty is a rare commodity these days.
...very good photoshop jobs are very hard to spot. The good are very convincing.
Nice find!
I actually used to analyse these types of images in my old job, it's pretty funny to see how bad some of the "shopjobs" are and how most people really don't notice.
Plus further processing after the retouching has taken place, especially for web images (i.e. downsampling, compression), makes it harder to spot again.