caption: Landscape workers for Arlington National Cemetery, employed by Greenleaf Services Inc. and Davey Tree Expert Company, are on strike for higher wages and benefits they say aren't being given to them. A group of the workers, who are members of the Laborers' International Union of North America, picket near the entrance to Arlington National Cemetery in Arlington, Va., on Wednesday, July 20, 2016. ( <PERSON>/Staff)
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