Do Muslims get upset when terrorists associate themselves with Ramadan?

Islamic Jihad has a photo essay of its "mujhadeen" participating in Ramadan Iftar meals, studying the Quran and praying with their masks and machine guns:

I have never seen a Muslim complain about how terrorists are co-opting sacred Muslim rituals to make themselves look pious. Nor have I seen any Muslim complain that it is incongruous to say that Ramadan is a time for peaceful reflection and piousness while holding automatic weapons.

Maybe I am looking in the wrong places, though.

Are any Muslims upset when they see things like this, or do all Muslims look at this and think it is an appropriate way to mark Ramadan?

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