If we had been the slightest bit clever, we would have made our celebration of this day a poignant counterpoint to the huge Soviet May Day celebration.
Where they paraded missiles, we’d parade new cars, appliances, machine tools, houses, toys, and a cornucopia of foodstuffs.
BTW, this year it coincides with the National Day of Prayer, of which the theme is “One Voice, United in Prayer.”
The special prayer for the occasion is [coincidentally?] modeled after the Selichot - Jewish penitential prayers. Or more specifically, Daniel chapter 9. Compare Nehemiah 1.