Paramount opened Iron Man 2 this past weekend in most other countries (but not the U.S.)  to get ahead of the World Cup and take advantage of May Day weekend.  Here in the new world we’re barely used to the idea of buying scarves to root for soccer (sorry: football!) teams, especially since the MLS season runs through the warmer months.  Most people on the street won’t know the World Cup host country (South Africa).  More significantly, most won’t know about the Haymarket riots and the labor union’s origins of May Day as a holiday.  But we won’t have to wait for Memorial Day weekend to see Tony Stark, we’re only a week behind everyone else.