I highlighted it as part of the original quote.
Trump's inflammatory anti-Muslim and anti-immigration rhetoric of late could have played a role in this guy's decision to do his terrorist act against these people in the same way Hitler's anti-Semitic rants inflamed the German populace against that population in the 1930s. It'd be pretty dumb to think that a
recent spike in "hate crime" attacks -- primarily against Muslims -- was not related in any way to the vitriolic spittle coming from Trump and other Republicans and right-wing commentators during the campaign and which continues to this day.
https://www.theguardian.com/us-news/2016/nov/14/fbi-anti-muslim-hate-crimes-rise-2015
If we're going to say that inflammatory anti-Western rhetoric spewed by imams in radical mosques and madrassas can lead to jihadis to carry out terror attacks against the West then we have to allow for the same thing from the "other side."