Politicians pay tribute to veterans and fallen heroes

Memorial Day: More than 228,000 flags at Arlington National Cemetery
Arlington Cemetery Flags In Memorial Day_00001027

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    Memorial Day: More than 228,000 flags at Arlington National Cemetery

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Memorial Day: More than 228,000 flags at Arlington National Cemetery 01:01

(CNN)This Memorial Day weekend, the President, First Lady and 2016 hopefuls took to Twitter to pay tribute to the nation's fallen heroes.