Donald Trump. Picture: REUTERS/DAVIS BECKER
Donald Trump. Picture: REUTERS/DAVIS BECKER

NEW YORK — Some of America’s biggest stars — including actors Robert Downey Jnr and Scarlett Johansson — appear in a short video unveiled on Wednesday, taking potshots at Donald Trump while rallying voters to the polls on election day.

"On Tuesday, November 8, this country will make one of the most important decisions in its history," the film and stage actors say as part of the effort launched by Save the Day, a Super PAC supporting Hillary Clinton.

PACs, or political action committees, are organisations created to raise funds to support or oppose a given candidate or political cause.

Super PACs can raise even larger amounts of cash during the immensely expensive American political campaigns, but are forbidden from making direct contributions to a candidate.

Stage personality Leslie Odom refers to Republican presidential candidate Donald Trump in the video, saying: "Do we really want to give nuclear weapons to a man whose signature move is firing things?"

Likewise, Hollywood star Don Cheadle appears to allude to the Republican presidential nominee when referring in the video to "a racist, abusive coward who could permanently damage the fabric of our society".

Save the Day was founded by Joss Whedon, director of two instalments of the hit Avengers films, among other works.

The get-out-the-vote video was unveiled less than seven weeks before the November 8 presidential election.