Long Island Rail Road workers were back on the picket lines at various spots in New York City and on Long Island on Sunday, voicing their concerns and demands as the strike continues for a second day.  While the work stoppage has caused a mess  for people heading to weekend events , the real concern is Monday morning's commute. The LIRR is the busiest commuter rail system in North America, with roughly 250,000 weekday riders. The strike is expected to force many to find alternative routes into