A lawsuit filed by the city’s biggest transportation workers union on Monday alleged the animal rights group NYCLASS spread misinformation about the city’s carriage horse industry in a bid to clear the way for developers who have long eyed the Manhattan stables where the animals live.

The lawsuit , which seeks at least a million in damages, was filed by the powerful Transport Workers Union and comes two months after Mayor Eric Adams called to ban Central Park’s carriage horses and replace them with electric cars. For years, NYCLASS has protested the industry, claiming the ponies are mistreated and abused.

The union pointed to comments from NYCLASS cofounder Steve Nislick in 2010 where he said eliminating the horse industry would “free up a lot of real estate.”

”NYCLASS was founded b

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