If you choose to take offence at white people blacked-up in all cases that's fine. If you start to discriminate between those instances you choose to find offensive and those you don't then you're already stating that blacking up only 'might' be a racist statement. My 'cheap shot' was not intended to be such, you simply chose to call it that because it didn't fit into your view of the world. That really is the point and it seems to me that, to judge by the preceding posts, the problem with black-face morris dancing is largely in the eye of the beholder.
From the point of view of a 'multi-cultural society' however, dream on. My experience of our society seems to be an observation of ethnic groups barricading themselves into their enclaves and claiming to be members of this 'community' or that 'community'. Integration in this country is a non-starter ad not far from the all-white community in which I live, there are Asian and Serbian Roma at each other's throats. Regular marches by the English Defence League and a 50% incursion of UKIP into our local council (many of the UKIP voters were Asians from the 'Pakistani Community'.) Where I live, a bloke blacked up is generally seen as a chap with a job!