The May Procession and the Queen of the May
There are still a few May processions about but not very many. And I doubt there are many as well-populated as they used to be. These were filmed in Inchicore in Ireland. Alas they were filmed long ago and are silent. So you might want to click on the final one first and listen to Canon Sydney McEwen while viewing the earlier.
[Addendum: This link should've been here at the beginning but I lost track of it and only found it now, and rather by accident at that. It'll give you a short history of the Inchicore May Day Procession.]