Editor's note: This column was co-authored by Tim Graham. For its second season, the creators of the FX series "The Americans" have chosen a new source for insight into the Cold War during the Reagan years -- one Lt. Col. Oliver North. It's a dramatic reversal from the first season, and it has infuriated some hard leftists. The show began with the shocking promise from creator Joel Weisberg that the series' heroes would be KGB agents: "We're making them the sympathetic characters. I'd go so far as to say they're the heroes." It quickly became apparent that these characters could...