Donald Trump Jr. is facing backlash on social media after selling a shirt that mocks Alec Baldwin over the fatal shooting that occurred on the set of his movie “Rust.”

A few days after the incident, Trump Jr. began selling shirts that say “guns don’t kill people, Alec Baldwin kills people,” on his website for $27.99.

Last week, Baldwin was handed a prop gun, which he thought was safe to use. However, when he fired the weapon, it fatally struck cinematographer Halyna Hutchins and injured director Joel Souza.

On Monday, “Don Jr.” began trending on Twitter with users slamming the son of the former president for poking fun at the fatal shooting.

“Don Jr. using the tragedy on the film set to get in a dig at Alec Baldwin is why that family should never be in office. Someone lost their life, and dude just wants to use it for a personal vendetta,” one post read.

Another user suggested Trump Jr. decided to sell the shirts because he was bitter about Baldwin’s portrayal of his father on the NBC comedy sketch show “Saturday Night Live.” 

“The Radical Right & idiot Don Jr. are going after #AlecBaldwin for the accidental shooting! They are still furious over Baldwin’s impersonation of #Trump on #SNL that made him appear like a big buffoon! Nothing is going to happen to #Baldwin! But #TFG should be locked up forever!” read the tweet.

Baldwin began portraying Trump on “SNL” Season 42. His impersonations of the former president earned him an Emmy Award for outstanding supporting actor in a comedy series.

A source told People that Baldwin “is canceling other projects” following the tragedy on the “Rust” set.

Donald Trump Jr. speaking during the first day of the Republican convention in Washington Donald Trump Jr. speaking during the first day of the Republican convention in Washington Photo: AFP / Olivier DOULIERY