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John Kerry said despite Donald Trump, we are heading toward a borderless society.

The secretary of state weighed in Trump’s candidacy at a commencement speech Friday at Boston’s Northeastern University, and he didn’t hold back.

“Many of you were in elementary school when you learned the toughest lesson of all on 9/11. There are no walls big enough to stop people from anywhere, tens of thousands of miles away, who are determined to take their own lives while they target others,” he told the graduates.

Kerry never mentioned the presumptive Republican presidential nominee by name, but it was clear to whom he was referring.

“So I think that everything that we’ve lived and learn tells us that we will never come out on top if we accept advice from soundbite salesmen and carnival barkers who pretend the most powerful country on Earth can remain great by looking inward. And hiding behind walls at a time that technology has made that impossible to do and unwise to even attempt,” Kerry added.

Not only did Kerry, who was the 2004 Democratic presidential nominee, mock the idea of a border wall, but he dismissed the notion of borders.

“For some people, that is all they need simply to climb under the sheets, close their eyes and push the world away,” Kerry said. “And shockingly, we even see this attitude from some who think they ought to be entrusted with the job of managing international affairs.”

“The future demands from us something more than a nostalgia for some rose-tinted version of the past that did not really exist in any case,” he said. “You’re about to graduate into a complex and borderless world.”

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Clip via The Washington Examiner.