The Yankees have taken control of Macombs Dam and Mullaly parks just days before groundbreaking on their new stadium.Fencing has gone up and construction crews are moving in. Now, both parks are closed to the public. Opponents of the $800 million stadium say they are not giving up their fight. They say the stadium will be detrimental to the environment and plan to appeal to a federal judge to halt construction.The group Save Our Parks is planning a demonstration during the official groundbreaking Wednesday.

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