Male congregants surround Holder-Winfield in prayer. Dabbing tears from his eyes, Gary Holder-Winfield spoke to his fellow congregants about losing his mother—and about launching a campaign for mayor.

“I can’t believe we had to wait over an hour at that doctor’s office.” “Blinker! Use your blinker! They put them on a car for a reason.” I may have uttered these complaints within the last three hours ...