Whether inadvertently or not, a critic seems to suggest that our article said that "the Muslim community" had a "responsibility to condemn" the attack.
The article deliberately does not use the term "the Muslim community".
It says that the labour movement had a responsibility to condemn the attack, because the labour movement should stand up for all workers against such violence.
It comments that the failure of the labour movement to do that "must... have discouraged local non-fundamentalist Muslims who were shocked by the assault from speaking out to condemn it".
Actually, when other left groups - maybe not the Spartacist League, but the SWP, say - do things in the name of "the left" which discredit the left, AWL does feel a responsibility to condemn those things and point out that they are not really "left-wing" at all.
The article did not demand that local non-fundamentalist Muslims who were shocked by the assault (surely, as MA suggests, the big majority) speak out to condemn it. It is not our place to demand that. But it does imply that it would have been a good thing if they had, and that the labour movement had a responsibility to make that as easy as possible for them.