As America prepares to celebrate its 250th birthday, the role of the labor movement is being celebrated by many of those in our workforce.Countless stories dating back to the beginning of unionization are taking center stage as we reflect back.From the Chrysler sit-down strike of 1937, this drum is just one of many labor artifacts preserved at Wayne State University, part of our nations story.Detroit is a big union town. We all know that. We hav…