A month ago, members of Silicon Valley's Christian, Jewish and Muslim communities gathered in downtown San Jose to observe the Catholic feast of Saint Francis, the Protestant and ecumenical celebration of World Communion, the Jewish New Year and the beginning of Ramadan. We listened as the bells of St. Joseph's Basilica tolled, a shofar sounded and the prayers for breaking Ramadan's first day of fasting were recited. Then we ate together, many of us embracing, each of us welcoming the humanity in the other and blessing one another in the name of our common God.The interfaith circle downtown was a...