Philadelphia was host to one of the first gay-rights marches in the country in July 1965 in front of Independence Hall. Since then, a flourishing gay-friendly community known as the "gayborhood" has grown up around the area of 12th and Locust Streets in Center City. RON CORTES / Inquirer Artist Ann Northrup, 54, sits on the scaffolding in front of her mural, “Pride and Progress,” on the western wall of the William Way Community Center on Spruce Street. The mural, which takes up almost an entire block, was started in August. Northrup and 20 others used more than 50 gallons...