If another "ism" appeared- and the appearance of the completely irrational sentiment known as Islamophobia is an example, possibly, of another "ism"- then we'd just need to get to work fighting that, and whatever ism might follow, and so on. Each struggle against each ism only improves the society in which the struggle takes place, because a society can only grow if it wills itself to stop inflicting wounds on parts of itself.