There was a thread about this last year when it was going to the CPS. Have a look. It was found, for the second time, to have no case to answer. Even so, this year, the Merrymakers have changed the name to Mummers Day and scrupulously gone through all the words of all the songs they sing, to make sure they can be offensive to nobody. It's one of the many black faced guising traditions that are found all over the country.