Maine U.S. Senate candidate Graham Platner (D) slammed the owners of the Boston Red Sox in a new ad.From the ad: “Private equity is taking our homes. It’s taking our hospitals. It’s taking beloved local businesses and stripping them for parts.”He added: “And now private equity is running the Red Sox into the ground.”Mediaite notes the ad was taken down by the New England Sports Network, which is also owned by the group that owns the Red Sox.