If, however, it is acceptable for one group of persons to be proud of their heritage and/or culture and to wish to preserve and defend it so must it be for others.

Such quaint concepts as an English Heritage and/or Culture are entirely a matter of subjective interpretation, choice and recreation, and therefore have no currency whatsoever with regards to their political or human cause - and this is as true of English Folk Song, Music and Dance as it is of the Coal Mining, Country Estates, or Steam Engines. Unlike Coal mining, Country Estates & Steam Engines however, with English Folk Song, Music and Dance there is nothing to preserve that isn't doing rather better in the context of the England of 2008 than it was in say, the 1950s, which is WAV's cut-off point for English Cultural Purity, before we started -   

Letting people
Enter a state
For factors like
Terror through hate.

Thus, when WAV says English culture is taking a hammering and, when people lose their own culture,society suffers, he is, as ever, talking out of his arse.