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Four years ago yesterday, there was a shooting at my younger sister Jenny's high school, Saugus High School in Santa Clarita, California.

Jenny was lucky enough to see kids running when she was about to be dropped off by her carpool, so she stayed safe.

But all of her friends were placed on lockdown, kids I've watched grow up and have known for as long as I can remember.

In the hours that followed, parents waited at my city's Central Park to reunite with their kids as students were released building by building, escorted by police and SWAT teams to the park.

Three days later, there was a vigil at that same Central Park to honor Gracie Muehlberger and Dominic Blackwell, whose parents laid them to rest at the tender ages of 15 and 14.

It was the largest gathering in my city's history.

official positions of power.