The universal chestnut about graduation days is that they're about endings and beginnings, joy and sadness.

But the sentiment was framed in a startlingly different way Wednesday at the Locke High School commencement, held on the expansive athletic field of the Watts school. Security was heavy; beefy guys wearing shirts that identified them as anti-gang detail looked out of place next to the beaming students in their pastel blue caps and gowns. Locke has been much safer during its first year as a Green Dot charter school, but a student was shot just outside the campus in April. Surrounded as Locke is by gang activity and violence, school officials were clearly aiming to keep any trouble at bay.

I was sitting in the bleachers next to proud dad Gregory McMiller, snappily dressed for his son Johnathan's big day, hanging on to a gigantic mylar balloon that he gallantly tried to keep from batting me in the head every time the breeze picked up.

"It's happy, but it's also sad," McMiller started. I waited for the predictable next words  -- happy because his child had grown up, sad because ... well, his child had grown up. Instead, he continued, "Because you know after today some of these kids are going to die. Some will go down a bad path and get taken out too young."

Not everything about commencement -- like the belief that the grads are headed to limitless futures -- is universal.