We should all be ready to do our duty as American citizens and, when duty calls, each of us should embrace our inner Rooftop Korean.The year was 1992, 27 years ago right about now, and the city was Los Angeles. Several police officers who got into a videotaped brawl with a petty criminal named Rodney King were acquitted of beating him up. The city exploded. It was chaos.I was a first-year law student, back a year from the Gulf War, and I had just joined the California Army National Guard. My unit was the 3rd Battalion, 160th Infantry, and we...