
Have you a park or shopping centre with a bench you can get to. I would just sit quietly on a bench with him beside you and 'watch the world go by'. Don't push him into anything at this stage, let him get over it in his own way.
Be prepared to ask people nicely not to pet him, you could take a piece of bedding for him to settle down on, I doubt Danes like to sit on cold concrete for long. Try not to look like a bag lady yourself or you could find people chucking coins at you :D
This is likely to take several trips, starting with less busy times, working up to more people over the coming weeks. Don't make a issue out of it or a fuss of him, let him think it is a normal way of life. When you walk him to and from, do it in a business like manner, if he sees you are confident it will pass on to him.
Good Luck
Sandra