Just in keeping with the spirit of this thread - the 'social history' angle - it has been said before that Britain was generally more racist (in a casual way, if you know what I mean) than it is today. 'Original skinheads' were just ordinary kids, the vast majority were working class from the cities, would have had a fairly wide spread of views, but those views would have reflected society as a whole, and their upbringing and education and what was being said in the media. In the cities there was a lot of resentment and suspicion of South Asian immigrants - that's just a fact of life in the late 60s, that's how it was.
I always tried not to be racist, but looking back, I'm sometimes surprised by some of the crass things I used to say that I wouldn't say now. I remember thoroughly disliking the way that South Asian lads in their teens and twenties dressed, but on the other hand I had Caribbean and Asian friends at college. Outside of college, most of my mates were white. There were no South Asian mobs round our way, but if there had been and there had been any trouble, I would have pitched in for my mates and not given a thought to the colour of the opposing mob. That's just how it was.