Many people have remarked upon the upbeat tone of Kamala Harris’ presidential campaign, with its emphasis on joy, smiles and laughter. But there’s a not-so-light-hearted underside to that, according to Chris Lamb, a journalism professor at Indiana University.

Harris is urging people not just to laugh with her but to laugh at her opponent, Donald Trump. Ridicule has long been a tool of politicians – Lamb has even written a book about it – and Harris is using it the way Trump has, to diminish her target’s status.

Trump may be, as Harris put it at the Democratic National Convention, “an unserious man,” but Harris’ attacks clearly have him rattled, Lamb writes. Ridicule is one of Trump’s admitted weaknesses, and it’s on full display in this presidential campaign.

Also in this week’s politics news:

Jeff Inglis

Politics + Society Editor

Kamala Harris laughs at Donald Trump during her convention speech on Aug. 22, 2024. Jacek Boczarski/Anadolu via Getty Images

Harris campaign tries to beat Trump at his own game − ridicule

Chris Lamb, Indiana University

Democrats are taking a new tone aimed at a particular weakness of Donald Trump: He hates being laughed at.

Both candidates are reaching out to union leaders and rank-and-file members. Jim Watson/AFP via Getty Images and Andrew Harnik/Getty Images

Trump and Harris, with starkly different records on labor issues, are both courting union voters

Robert Forrant, UMass Lowell

Union voters are particularly significant in Michigan, Pennsylvania and Nevada, three swing states where the share of voters who belong to unions is above average.

Former U.S. President Donald Trump takes the stage during a campaign rally in Johnstown, Pa., on Aug. 30, 2024. Chip Somodevilla/Getty Images

Trump’s die-hard support may be explained by one of his most misunderstood character traits – ‘charisma’

Michael Scott Bryant, Bryant University

Throughout modern history, charismatic leaders have shown their extraordinary ability to elicit devotion to themselves and their causes.