The talk that the political scientist Charles Murray attempted to deliver last month at Middlebury College in Vermont must have been quite provocative — perhaps even offensive or an instance of hate speech. How else to explain the vehement opposition to it?

Before Mr. Murray’s arrival on campus, an open letter to the college from several hundred alumni protested that his scholarly opinions were “deceptive statistics masking unfounded bigotry.” And when it came time for Mr. Murray to give his speech, which was based on his 2012 book, “Coming Apart,” an analysis of the predicament of the white working class in the United States, he was shouted down by student and faculty protesters. In chants they accused him of being a racist and a white supremacist. Some of the protesters became unruly and physically violent, forcing Mr. Murray to flee.

Mr. Murray ended up giving a version of his talk later that day, via livestream, from another room. How extreme were his views?

We have our own opinion, but as social scientists we hoped to get a more objective answer. So we transcribed Mr. Murray’s speech and — without indicating who wrote it — sent it to a group of 70 college professors (women and men, of different ranks, at different universities). We asked them to rate the material on a scale from 1 to 9, ranging from very liberal to very conservative, with 5 defined as “middle of the road.” We also offered them a chance to explain why they gave the material the score they did.