My Rocky was called a cow and laughed at our first night of obedience class, and that kind of bothered me, so I sort of know how you feel. The boorish behavior of those rude people at your ringside displayed a complete lack of manners and of decency. Aren't there rules about that sort of thing? Those people should have been shown the door.
Your dog sounds absolutely beautiful, give him a hug for me and tell him so.