How would we regret something that many [[most) of us aren't old enough to have participated in?

But let's entertain this [[ridiculous) notion that some riots that occurred nearly half a century ago spun Detroit into a decline from which it could never recover. How shaky would the fundamentals of 1967 Detroit need to be for that to be the root cause of Detroit's decline? Forty-something people died in the riots 50 years ago... But 3,000 people died in a terrorist attack in New York barely a decade ago yet NYC didn't suffer a massive population loss. More people died in the Los Angeles riots 20 years ago than died in the Detroit riots 46 years ago, yet Los Angeles never lost any population [[and has also largely forgotten that they hosted the worst race riot in American history).