The wounds are always there, even if they’re not always visible from afar. Like the indentations on the Green Monster, they’re historical scars. All it takes is a few ignorant people to reopen an old wound and reinforce an outdated stereotype. It was just 10 weeks ago that a segment of angry Bruins fans took to Twitter and spewed racially-charged insults at Washington Capitals forward Joel Ward, whose goal had eliminated the Bruins from the playoffs. Now, we’ve been forced to confront Boston sports’ racial dark days again. Red Sox left fielder Carl Crawford, on a rehabilitation assignment with Double...