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Only in America

Only in America: No moshing allowed

Boston police declare war on mosh pits — and more in our collection of strange revelations about the nation

Boston police are cracking down on aggressive dancing at heavy-metal concerts. "Mosh pits" date back to the 1970s, but police say they will no longer tolerate metal fans jumping and slamming into each other. "Dancing is a First Amendment right," said police spokeswoman Nicole Grant, "but the behavior itself is a violation."