While it's certainly true that American conservatives are more likely to be anti-Muslim, particularly Trump supporters, this does illustrate why you shouldn't rush to make assumptions about attacks; there's still the chance for instances like this.
On this note: I still can't help but see an instance of anti-Muslim attacks in North America and wonder if one of our former forum members was responsible. We had a few users in the past who were so virulently islamophobic that it was entirely reasonable to worry that they'd turn violent.