As soon as Mark Zuckerberg uttered an oblique reproach of Donald Trump’s immigration platform onstage at Facebook’s annual developer conference Tuesday, the countdown clock for a cheap shot from the G.O.P. front-runner’s campaign started ticking down. Right on cue, just about a day later, Camp Trump fired that anticipated missive in Zuckerberg’s direction.

“Self-righteousness isn’t very proactive,” Trump campaign spokeswoman Katrina Pierson told CNBC on Wednesday. “I will take Mark Zuckerberg seriously when he gives up all of his private security, moves out of his posh neighborhood, and comes live in a modest neighborhood near a border town, and then I’m sure his attitude would change.” She added that Silicon Valley chief executives should focus on innovation and creating jobs, and “let politicians make the policies.”

Trump, a New York real estate scion worth billions of dollars, himself possesses a security team. He rests his head in a gold, marble palace atop Fifth Avenue. When pressed to answer how Zuckerberg is any more privileged than Trump, Pierson rattled off a bewildering response, saying that Trump “isn’t the one that is saying we should not build a wall and we should not protect everyone else.” That, she said, “is the hypocrisy.”

Pierson’s criticism came after Zuckerberg told the audience at his F8 conference that as he travels around the world, he hears “fearful voices calling for building walls and distancing people they label as others, for blocking free expression, for slowing immigration, reducing trade.”

Zuckerberg, meticulously on brand as ever, suggested we build bridges instead of walls.