GHOSTS OF SUGAR LAND (2019) Stream on Netflix. This documentary picked up a nonfiction short film award at this year’s Sundance Film Festival. Shot in suburban Texas and directed by Bassam Tariq (“These Birds Walk”), the film is built around interviews with a group of men whose boyhood friend is suspected of joining ISIS — a possibility they debate as they discuss growing up with him as well as their experiences growing up Muslim in post-9/11 America.

VIOLA VISIONS FESTIVAL Stream on Medici.tv. The New World Symphony in Miami Beach is hosting a five-day festival centered on the viola this week, with events set to be live-streamed through Saturday. Tonight , several big-name violists will be conducted by Michael Tilson Thomas, in a program that places Bach’s sixth “Brandenburg” Concerto alongside contemporary pieces by Nils Bultmann , Garth Knox and Andrew Norman . Other highlights from the festival include a concert Thursday night at which Nico Muhly will conduct his own “Keep in Touch,” with the violist Nadia Sirota.