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Frustrated with lack of action and that is why he is running for president. it was a big weekend for the top democrats, nbc's kelly o'donnell reports. >> reporter: a raucous ritual to fire up iowa democrats. team bernie sanders decided raw decibel level showed their organizing strength. clinton's campaign countered with a more subdued but eye catching light show. sanders trying to prove he is the true progressive, made clinton his target with a string of differences from the iraq war to trade and gay rights. >> now today, some are trying to rewrite history by saying they voted for one anti-g...