---So someone at the Colorado Springs Gazette did the photoshoping?---
You asked what was the first thing that came to mind.
I do, however, think that this was a jihadi bombing gone wrong.
In my experience the folks at the CO Springs Gazette are very liberal leaning. One of the editoral writers there is the sister of Diana DeGette a Democrat rep. IMHO photoshopping a pic to make it look as if Hinrichs was Islamic is the LAST thing they would want to do. If there was an agenda being served it would be more to their liking to paint a picture of a "right wing militia" guy vs. and Islamic Jihadist...