People complained the film was 'offensive' (Photo: PETA)

A pro-vegan video showing how dairy cows are artificially inseminated has been pulled from stores across Wisconsin after complaints it was 'offensive' and 'graphic'.

The Pregnancy Gun, a 30-second film by vegan charity PETA, ran in checkout lines at 21 stores across the pro-dairy state from October 3 - being ditched after just two weeks.

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The film debuted this month to coincide with the World Dairy Expo in Madison. It was supposed to run in Noor Meat & Grocery Store, Mother’s Food & Liquor, and Max’s Family Supermarket in Milwaukee as well as in Enrique’s Market in Madison.

PETA's film shows how dairy cows are artificially inseminated

Vegan milk

"The Pregnancy Gun aimed to remind viewers that milk and cheese come from sexually assaulted cows," says PETA Executive Vice President Tracy Reiman.

"PETA encourages anyone left with a bad taste in his or her mouth by this video to ditch dairy 'products' in favor of soy, almond, coconut, or oat milks; creamy vegan cheeses; and other nondairy foods."

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PETA has replaced the film with an ad showing a mother cow and her baby alongside the words: "Not Your Mom? Not Your Milk!"