Donald Trump would never have confronted an ordinary construction worker the way Joe Biden’s did in a now-viral confrontation Tuesday with a worker at a Detroit auto plant: “You’re full of sh*t,” Biden told the man in a tirade.

Trump fights hard, and he even fights dirty. But one thing he never does is punch down.

He reserves his attacks for celebrities, journalists, and political operatives — and he usually only attacks them after they attack him first.

The “exception” that is usually cited is Khizr Khan, the Gold Star father whom Trump clashed with in 2016. But Khan attacked Trump first — and when Trump responded, at a journalist’s prodding, it was barely an attack at all.

Democrats often confuse Trump’s tactics for “bullying,” because they are so frequently on the wrong end of Trump’s tweets. But to the extent they think his behavior “excuses” theirs, they are making a dangerous mistake.

Biden went after the worker for questioning his stance on the Second Amendment. It was not the first time he had attacked a voter for asking a question. He called one woman a “lying, dog-faced pony soldier” in New Hampshire.

Biden also went after a voter in Iowa who asked him a perfectly legitimate question — based on MSNBC coverage — about how his son, Hunter, had managed to secure a board seat at Burisma, the corrupt Ukrainian gas company.

At times, Biden has even attacked Trump supporters in general, claiming that “they like him because he’s a racist” — though he noted that despite their racism, they had been scared enough to vote “for a black guy and an Irishman.”

Biden has said of Trump: “This is a president who laughs at, insults, demeans, and demonizes other people … He’s more a bully than a president.”

He has that backwards: Trump fights back against bullies. Biden punches down.

Joel B. Pollak is Senior Editor-at-Large at Breitbart News and the host of Breitbart News Sunday on Sirius XM Patriot on Sunday evenings from 7 p.m. to 10 p.m. ET (4 p.m. to 7 p.m. PT). He earned an A.B. in Social Studies and Environmental Science and Public Policy from Harvard College, and a J.D. from Harvard Law School. He is a winner of the 2018 Robert Novak Journalism Alumni Fellowship. He is also the co-author of How Trump Won: The Inside Story of a Revolution, which is available from Regnery. Follow him on Twitter at @joelpollak.