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The trouble for the left is that most of their support is due to sublimated sexual frustration, often due to impotence and 'performance difficulties', a well known side effect of a vegan/vegetarian diet, which they release by getting really really excited about injustice wherever they can imagine it.
One only has to look at the behaviour of Young Conservatives who are notoriously at it like rabbits compared to meetings of Young Socialists where everyone has to pretend they are feminists and daren't ask anyone if they are 'up for a quick one' in case they are mistaken for the testosterone driven beasts all we men are.
It's the same with MPs. Labour always get caught with their hand in other people's pockets, Conservatives with their hand in their parliamentary researcher's knickers.
Unfortunately for them most of us in the UK have more 'stuff' than we will ever need, so the left are now almost totally redundant, and the Labour Party has become a rainbow-coalition group whining about things they can do very little about such as the wickedness of globalisation, big business, global warning, Islamophobes, frackers, misogynists, migration watchers, car drivers, fur wearers, grammar schools and cis-gendered carnivores.
On the plus side it looks like most of them will at last get shafted in May!