LOS ANGELES (Reuters) - "The Dark Knight Rises" recorded strong ticket sales in its opening weekend, but well below forecasts given by many in Hollywood, as some moviegoers appeared to have stayed away after a shooting rampage at a midnight showing of the film on Friday. The film grossed an estimated $162 million in showings through Sunday in U.S. and Canadian movie theaters, according to studio estimates from people with knowledge of the data. That was lower than the $173 million that had been projected on Saturday based on Friday receipts. ...

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