SAN FRANCISCO (AP) — Thousands of people gathered Saturday at San Francisco’s Civic Center to celebrate the life of Bob Weir, the legendary guitarist and founding member of the Grateful Dead who died last week at age 78. Musicians Joan Baez and John Mayer spoke on a makeshift stage in front of the Bill Graham Civic Auditorium after four Buddhist monks opened the event with a prayer in Tibetan. Fans carried long-stemmed red roses, placing some at an altar filled with photos and candles. on...