The Iranian film “The White Meadows” gives a whole new meaning to the word “tear-jerker.” Beautiful and enigmatic, the film is a veiled attack on the hardliners who rule Iran. It tells of a  man who for years has been traveling by rowboat to several islands off the coast of Iran to collect the tears of mourners at funerals, although nobody is exactly sure what he does with the precious liquid. Tehran authorities have forbidden the director-writer, Mohammad Raoulof,  to leave the country, but he sent the festival a message about the hardships of life in Iran.  I wouldn’t count on the mesmerizing film getting a run in New York, so take advantage of its remaining screening at the Tribeca FF, Saturday May 1 at 7 p.m. at the Chelsea Cinemas.