As “In the Heights” hits theaters one year after its original release date, we talk to director Jon M. Chu about why he thinks immigrant narratives deserve to be summer blockbusters. Chu tells us about his youth as a child of Chinese and Taiwanese immigrants, and the role that TV and film played in his family’s sense of belonging. After a successful career directing large budget franchise movies for over a decade, Chu talks about the reckoning that led him to fight for movies like “Crazy Rich Asians” and now, the movie adaptation of “In the Heights.”