With immigrants as a central theme, plus a nod to Jordan Peele's “Get Out”and musical numbers staged on Berlin streets that could come from an ABBA film, German director Tom Tykwer's “Das Licht” (The Light) opened the 75th Berlinale film festival on Thursday with an enigma. Which side of the intensely controversial issue of wholesale…Read more “Das Licht” opens 75th Berlinale with an immigrant puzzler — and tale of the supernatural