From Dabiq magazine (their official propaganda organ and always a rib tickling read. If you are into extracting someone's ribs before tickling them.
"Many Westerners, however, are already aware that claiming the attacks of the mujahidin to be senseless and questioning incessantly as to why we hate the West and why we fight them is nothing more than a political act and a propaganda tool,” the article says. “The politicians will say it regardless of how much it stands in opposition to facts and common sense just to garner as many votes as they can for the next election cycle.”
There it is in black and white. We are doing these things because we hate you and want to kill you. Why is this so hard to understand?
It must be incredibly frustrating as an Islamic terrorist not to have your views and motives taken seriously by the societies you terrorize, even after you have explicitly and repeatedly stated them. Even worse, those on the regressive left, in their endless capacity for masochism and self-loathing, have attempted to shift blame inwardly on themselves, denying the terrorists even the satisfaction of claiming responsibility.
It's like a bad Monty Python sketch:
"We did this because our holy texts exhort us to to do it."
"No you didn't."
"Wait, what? Yes we did..."
"No, this has nothing to do with religion. You guys are just using religion as a front for social and geopolitical reasons."
"WHAT!? Did you even read our official statement? We give explicit Quranic justification. This is jihad, a holy crusade against pagans, blasphemers, and disbelievers."
"No, this is definitely not a Muslim thing. You guys are not true Muslims, and you defame a great religion by saying so."
"Huh!? Who are you to tell us we're not true Muslims!? Islam is literally at the core of everything we do, and we have implemented the truest most literal and honest interpretation of its founding texts. It is our very reason for being."
"Nope. We created you. We installed a social and economic system that alienates and disenfranchises you, and that's why you did this. We're sorry."
"What? Why are you apologizing? We just slaughtered you mercilessly in the streets. We targeted unwitting civilians - disenfranchisement doesn't even enter into it!"
"Listen, it's our fault. We don't blame you for feeling unwelcome and lashing out."
"Seriously, stop taking credit for this! We worked really hard to pull this off, and we're not going to let you take it away from us."
"No, we nourished your extremism. We accept full blame."
"OMG, how many people do we have to kill around here to finally get our message across?"