That photo above was taken in Wigan. Amazing. But what's even more amazing is that it was taken in 2013 - this year! What the hell's going on here? They may as well be demonstrating against workhouses of British slavery.
I think that many these young “rebels”, overwhelmingly middle-class students, think they are rebelling by being Communists or Trotskyists. Some other young rebels, usually not students and not middle class, have rebelled in better, newer, or at least in more genuinely rebellious ways.
It’s strange that white middle-class students still rebel in this way. Both Communism and Trotskyism (plus other Leftist offshoots) have been very prominent in Europe and American for over 60 years. (Trotskyism more in the last 30 to 40 years.) Leftists have taken over many parts of many universities, parts of the BBC, parts of the churches, many parts of local councils, etc. The Left also rules many of Antonio Gramsci's "hegemonic institutions” from the law to the charities to “rights groups”.
The even more bizarre thing is that many – but not all – of the parents of these young Trotskyists and, less so, Communists, were probably Commies/Trots at university as well! How can you rebel against parents who believe largely the same things as you? (Though the parents won’t dress in the same way or listen to the same music as their kids.) In fact, their parents are probably still Trots of some kind - though they won't march and shout as much as the rich kids in the photo anymore. They don't need to. A large part of the their Establishment is already Leftist!
Many Labour Party bigwigs were former Communists at university. But why be a member of a group like the SWP-UAF, etc. when you can become the Government, or just the Opposition, and do far more damage – or “radical change” - to the UK? Groups like the SWP-UAF, etc. are probably seen as playground revolutionaries by those Trots/Communists/socialists at the top; whether Gareth Peirce the Trotskyist super-lawyer or all those "ex-communists" in the Labour Party. In fact, many upper-middle-class Trotskyist professionals, such as lawyers and "rights activists", may think that all the noise and bother of Street Trotskyists like the SWP-UAF actually sets radicalisation and even revolution back somewhat. After all, Gramsci explicitly stated, over 70 years ago, that a revolution in society - and even in the state! - can come about without violence or without blood on the streets (although this seemed to upset him).
The old 19th-century or Bolshevik notion of “storming the barricades” is dead. Such a thing only appeals to those Leftist activists (of whom there are many) who really prefer the violence-bit to the actual revolution/radicalisation-bit. (That is, many Leftists like violence but for some reason or other they feel the need to tart that fact up with "a bit of politics".)