Thinking about who Islamist attacks are aimed at (If we assume zombies like that have logic). The attacks are likely to provoke fear and hatred towards all Muslims. Then the Muslims will feel more alienated and therefore easier to recruit for any Islamist fighting. Mission accomplished.
So please don’t indulge in pointless or even destructive hatred. Oppose the ideas. Stand for freedom. Show them that we are humans, we are humane… And that the laughter is always a better weapon than rage.