Former President Donald J. Trump posted a video on Friday to his social media website that features an image of President Biden with his hands and feet tied together.

Mr. Trump posted the video to Truth Social early Friday afternoon with a line that said it was filmed on Long Island on Thursday, when Mr. Trump attended the wake of a slain New York City police officer in Massapequa Park, N.Y. The video shows two moving trucks decorated with flags and decals supporting Mr. Trump. The tailgate of the second vehicle features the image of Mr. Biden.

Macabre imagery targeting Mr. Trump’s perceived enemies frequently circulates online among right-wing provocateurs and pro-Trump groups, and in some cases has been featured at conservative conferences. Photos of trucks featuring similar images of Mr. Biden tied up have been shared across social media, and online vendors sell vehicle stickers with the image.

Mr. Trump’s promotion of the video featuring the image reflects the increasingly caustic and personal attacks that he has directed against Mr. Biden — for example, in a speech this month he said that “everything Joe Biden touches turns to” filth, though he used an expletive — and it extends a record in which the former president features violent imagery on his social media accounts.

A representative of the Biden campaign did not immediately respond to a request for comment.

Steven Cheung, a spokesman for the Trump campaign, said “that picture was on the back of a pickup truck that was traveling down the highway,” adding that “Democrats and crazed lunatics have not only called for despicable violence against President Trump and his family, they are actually weaponizing the justice system against him.”

The video was still on Mr. Trump’s Truth Social page as of late Friday evening.