Print The Skirball Cultural Center partially reopens this weekend with “Ai Weiwei: Trace,” the artist’s portraits of imprisoned dissidents and free-speech advocates, all crafted with Lego bricks. It’s a smaller version of Ai’s installation for his unprecedented 2014 exhibition on Alcatraz, which Times critic Christopher Knight called “an always-poignant, often-powerful meditation on soul-deadening repressions of human thought and feeling.” The Skirball show leads our weekend list of cultural offerings for your viewing consideration. All times are Pacific. SoCal in-person events “Ai Weiwei: Trace” The acclaimed artist and activist‘s Lego portraits go on view in an 8,000-square-foot gallery lined with a gold-colored wallpaper, a design by Ai’s studio that turns images of surveillance equipment into a decorative pattern. 2701 N. Sepulveda Blvd., L.A. Saturday through Aug. 1. $7-$12; kids under 2 are free; advance timed-entry tickets required. skirball.org