After receiving the Palme d'Or at the Cannes Film Festival for his film I, Daniel Blake, Loach attended the opening ceremony at the Arab World Institute in Paris of the Festival Ciné Palestine, where he lashed out against Israel. As this video shows (in English and French) the audience went wild when he called for the boycott of Israel..
By the way, the head of the Arab World Instiute is Jack Lang, a French politician whose his father was Jewish. Several Jewish celebrities support the festival.
More @ Times of Israel (in French)