Peaceful demonstrators hold up placards outside the Bethesda Library on June 2 protesting the death of George Floyd while in police custody. (Olivier Douliery/AFP/Getty Images)

Marc Elrich, a Democrat, is the Montgomery County executive.

This is a deeply troubling time in our society. Our failure to deal with more than four centuries of racism has pushed racial tensions to a boiling point yet again. Fifty-two years ago, in the wake of rioting that rocked American cities, the national blue-ribbon Kerner Commission’s report documented the horrific legacy and the racist practices that led to the riots. A preface to the report described it as “not so much a report on the riots as a report on America — one nation, divided.”