“Conservative students have to learn how to negotiate through their school’s bureaucracy, which is often put in place to prevent or control student events,” Mr. Robinson said in an email.

The group also provides kits of what it calls “conservative swag,” such as a giant dorm-room poster of Ronald Reagan on horseback, instructions for staging a funeral for the death of Halloween (buy a lawn decoration coffin or make one yourself) — a swipe at university efforts to discourage offensive costumes — and posters to distribute on Sept. 11 featuring vivid depictions of the World Trade Center attacks and terrorist beheadings.

In addition to its fiery speakers and marquee names like Newt Gingrich, the organization’s roster includes many low-fuss speakers like the publisher Steve Forbes and the author Ben Stein. It was not associated with the divisive campus appearances recently made by the right-wing writer Milo Yiannopoulos.

But it does sponsor Mr. Spencer, whose writings, including on his website Jihad Watch, are full of dire warnings about the global threat of radical Islam. His work was cited repeatedly in the 1,500-page manifesto of Anders Behring Breivik, who killed 77 people in Norway in 2011.

Given the current climate, Mr. Spencer’s Buffalo speech was virtually guaranteed to cause a commotion. Even so, Mr. Robinson said he was surprised by the reaction.

“If you disagree with Spencer to that extent, don’t come to his lecture, don’t call attention to him,” Mr. Robinson said in an interview at the group’s modern offices, where photos of the Reagan Ranch and of influential conservative leaders are on display.

“If you’re 17, 18, 19, 20 years old, do not say that a person doesn’t have the right to express their ideas, and other people to hear those ideas,” he said. “That’s not the United States I understand and it’s not what the American college education should be about.”