ADVANCE FOR WEEKEND EDITIONS, JULY 3-4–FILE–Fans frolic at the infamous ‘Gimme Shelter’ rock concert featuring the Rolling Stones at the Altamont Race Track in Altamont, Calif., in this December 8, 1969 file photo. Hippies donned paisley T-shirts, wore flowers in their long hair and freaked out on psychedelic drugs. Status quo was the enemy, peace their mantra. Certainly many were in it just for the fun, but there’s no denying an impact that may have forever changed California’s political and social landscape. (AP Photo/File)