Why did a self-described white supremacist target apparent white people at Jewish community centers? The answer is quite simple: Though Jewish people are members of every so-called "race," even Jews of European heritage have been and still continue to be "racially" othered by dominant, Christian-European-heritage communities.
It is crucial that the terminology the museum uses in this section not generalize and blame the world's Muslims as a whole. We do not provoke Christians by calling the Kansas shooter a product of "Christian terrorism" and implicitly blaming the religion, so why do we continue to tolerate the term "Islamic terrorism?"
On Good Friday, if you can't say it in front of the rabbi, don't say it at all. But don't assume you have to water it down either. Because if we can not respect each other's uniqueness and difference in public worship, how will we ever go deep enough to get to the really important questions that clergy desperately want to ask?