“The Voice of Hind Rajab” premiere at the Venice Film Festival proved to be a hugely emotional event, with very few dry eyes in the Sala Grande.

One of the most talked-about films going into the festival, the powerful and gut-wrenching drama — from Tunisian director Kaouther Ben Hania — tells the true story of 5-year-old Palestinian girl Hind Rajab, who was killed in the early stages of the war in Gaza. The feature received a huge 22-minute standing ovation, the longest of the festival so far. As the ovation surpassed 20 minutes, and in a clear effort to get the room to disperse, the lights were dimmed in the theatre. The clapping continued.

Attendees in the crowd were holding up several Palestinian flags, and chants of “Free Palestine” rang out during the applause. Joaquin Phoenix and Rooney Mara, who are executive producers of the film, were in attendance and held a photo of Rajab on the red carpet with the filmmaking team. Phoenix also wore a Artists for Ceasefire pin.