- Why not fight against THAT?
There was already lots of immigrants in London then, and they brought good musical influences with them that white Brits mixed in with their sound, like reggae and ska from Jamaica or the sitar sound from India that influenced the Beatles etc. Its an almost total waste of time blaming immigrants when capitalism is 50 times a bigger problem (if you cant bring yourself not to blame immigrants for the basic reason of it being very unpleasant racism, that is!).
And nowadays it's not only made a mess of music its also making a mess of the environment. Which is ANOTHER focus of the 60s that capitalism pushed aside in the 80s... until now we are HAVING to face up to it, decades too late.
So if you want to bring back the good times then fight the real enemy. And its not someone with a different colour than you. They probably have the same colour as you - just a 1000 times more power and money.
Otherwise, what a great song!