Ben Stiller recalled visiting Haiti’s Cine Institute at the film school’s fund-raiser, “Haiti Optimiste,” at the Alliance Francaise’s Florence Gould Hall Thursday. Stiller last year met students and screened “Tropic Thunder.” “They asked really hard-hitting questions,” he said. “The environment these filmmakers are coming from, not having any tools and not growing up with the tools to make movies, yet there’s a desire to make films…it’s inherent for them to want to tell stories.”