This guy's article pretty much sums it up.
T-shirt depicts 'pathetic and brutal legacy'
What T-shirt should you wear when you need to blend in with terrorists? Incredibly, we have an answer to that question.
Wearing this shit shows how woefully uneducated this country can be. I know some people explain it's not the person but the idea that it represents (some sort of misguided revolution), but it really comes down to the actual image, that of a murder (and a woefully incompetent revolutionary.. if you want someone to embody revolution).