If you are over age 55, you might have memories of the Stonewall Riots; vivid ones that may’ve become gauzy; or sketchy ones, perhaps, from the viewpoint of a child. If you’re under age 55, the Stonewall Riots are undoubtedly just a story to you, and there’s a lot for you to learn. To mark the anniversary of this event that altered so many lives, look for these new books…