I think Jack is being deliberately provocative when he refers to 'blackface' morris. 'Blackface' is a particular form of blacking up which is intended to perpetuate racial stereotypes and is typified by minstrelsy. I've never seen a morris side blacked up in a style which resembles blackface or which perpetuates a racial stereotype (unless that stereotype is of slightly overweight white men with beards).

Since it is more than 35 years since the Black and White Minstrel show was last broadcast, and it was a bizarre anachronism even then, surely when seeing someone blacked up today the association should be with morris, rather than minstrelsy?