Oakland’s eighth annual Pride Parade began Sunday with a roar — the rev of motorcycles as parade leaders Dykes on Bikes rode up Broadway. Thousands of people attended the parade, waving flags, cheering and dancing. The 83 community groups, government affiliates and corporate sponsors in the lineup bore their own messages, played music ranging from ABBA to the Jonas Brothers, and invited attendees to join in the celebration. “Feeling invited is just a sacred part of the queer community —…