a.m. Gardeners won’t want to miss the Ladybug Giveaway at English Gardens’ six main stores. Ladybugs are considered helpful insects, eating aphids, spider mites, immature whiteflies and other soft-body insect pests. 10 a.m. Locations in Ann Arbor, Clinton Township, Dearborn Heights, Eastpointe, Royal Oak-Troy, and West Bloomfield. Call (586) 771-4200 or (734) 332-7900.
p.m. Detroit Roller Derby’s June double-header will be held in the drill hall of the Masonic Temple. Two of the state’s top ranked leagues will face off. The Detroit Allstars A and B teams will play the Ann Arbor Brawlstars and Bruising Company in the first ever “Battle for the Dime Martini.” 5 p.m. 500 Temple, Detroit. $15 advance ($18 at-the-door), free for 12 and younger. Visit brownpapertickets.com.
p.m. The Charles H. Wright Museum of African American History presents “Black Detroit: A People’s History of Self-Determination,” a conversation between author Herb Boyd and Rita Kiki Edozie, Ph.D. 2-3:30 p.m. $8 adults, $5 members and seniors (62-plus), and free for those younger than 3. (Earlier, at 12:05 p.m., the museum’s Cinetopia Film Festival presents “I Am Not Your Negro,” written by James Baldwin and directed by Raoul Peck, with the voice of Samuel L. Jackson.) 315 East Warren, Detroit. Call (313) 494-5800 or visit thewright.org.
SATURDAY / SUNDAY
p.m. Be there for the return of Mitch Albom’s “Ernie” and “Hockey — The Musical!” at City Theatre. 2 and 8 p.m. Sat.; 2 and 5:30 p.m. Sun. Tickets are $25 (”Ernie”) and $39.50 (”Hockey — The Musical!”). 2301 Woodward, Detroit. Call (313) 471-3099.
p.m. The 17th season of “Shakespeare in the Arb” presents performances of “The Tempest,” directed by Kate Mendeloff of the University of Michigan Residential College, and performed by students and local actors, at Nichols Arboretum. 6:30 p.m. Sat. and Sun. (through June 25). 1610 Washington Heights, Ann Arbor. Call (734) 647-7600.
a.m. Cars ‘R’ Stars returns to historic Packard Proving Grounds and will feature cars of every era, including “Hoods in the Rear” automobiles. See hundreds of vintage vehicles and a variety of cars built over the years with the engine in the rear. 8 a.m.-3 p.m. Registration the day of the event is $20 for non-judged, and $25 for judged cars, and includes a swap meet with over 200 vendors, as well as free shuttle service to your car. Walk-in admission is $5, and free for children younger than 12 with a paid admission. Van Dyke at 23 Mile, Shelby Township. Call (586) 247-5921, or visit carsrstars.com.
a.m. Enjoy the warm summer months by shopping for unique handmade goods and other items at Sunday Street Market at Eastern Market. 10 a.m.-4 p.m. every Sunday (now through Sept. 24). Free. Russell, between Gratiot and Mack, Detroit. Visit easternmarket.com.