It’s been 20 years. On Jan. 10, 2001, Scott Thorpe went on a shooting rampage in Nevada City and Grass Valley, killing Laura Wilcox, 19, Pearlie Mae Feldman, 68, and Michael Markle, 24. Several other victims were wounded in the attacks that paralyzed the entire county. Spurred by the death of their daughter, Nick and Amanda Wilcox became nationally known advocates both for gun control and for Laura’s Law, legislation designed to authorize court-ordered outpatient treatment for people with severe, untreated mental illness. Nevada County Behavioral Health Director Phebe Bell called Laura’...