Update: May 1 music and film screening to be at 8 PM, not 7:30 PM

The special May Day Performance Space event featuring musician Bill Collins followed by a screening of the legendary social drama “Salt of the Earth” will take place a half-hour later than initially scheduled in order to accommodate participants of that evening’s labor march in New Haven. Collins will perform a short set of rabble-rousing folk and labor songs at 8 PM followed promptly by a screening of “Salt of the Earth.”