Naman Ramachandran Violence in Mexico was one of the dominant themes of the press conference for Michel Franco’s Venice competition title “Sundown” on Sunday, with the director and stars Tim Roth, Charlotte Gainsbourg and Iazua Larios in attendance.Set in the seemingly tranquil Mexican resort city Acapulco, Roth and Gainsbourg play members of a wealthy British family whose vacation there is cut short by a distant death and an existential crisis comes to the fore.