A kindly-looking, avuncular man who has followed his own moral code all his life, with a belief in the correctness of the ends justifying the means, he has set an enthusiastic and adorable example to thousands of acolytes. For example, his belief in the cause of Palestinians has allowed him to justify turning a blind eye to overt and covert anti-Semitism wherever it may find him. His belief in the cause of a unified Ireland allowed him to ignore the ruthless murders and maiming of innocent people.
Lately, his belief in the non-existence of the Srebrenica massacre meant that it was cool to spend the dinner on the evening of the anniversary of this ghastly slaughter scoffing pizza with a vocal Srebrenica massacre denier.
On the anniversary of the massacre. Let that sink in. I mean, if Theresa May did something like that, the outrage on the left would be able to power London for weeks.
But because Saint Jezza has always been on the right side of history, it's all good. His morality is unsullied by the fact that he's forever hanging out with murderers, terrorists and people with the most hideous of views. His blithely ignoring open Jew-hatred on Press TV, Iran's state broadcaster - that's Iran, that kills people for being gay - in exchange for money, is nothing of import.
John McDonnell and Saint Jezza earn proper fat cat salaries, just like Len McCluskey, but of course that's perfectly OK, because they're all on the right side of history. They all earn their money literally being parasites on the working man, but of course that's perfectly OK, because they're all on the right side of history.
(We will ignore for the moment the slight issue of revisionism transforming things like "overt support for an IRA by any means necessary" into "a vital part of the peace process" when we talk about the "right side of history".)
We are already seeing Stalinist putsches of soft-left MPs, for not toeing the line sufficiently. I'm sure Saint Jezza would never ask for such things, but he's not exactly falling over himself to stop it, is he? He isn't even Secretary General, er, Prime Minister, and already Labour is behaving like a Stalinist party.
Because the ends justify the means.
So here we are. Saint Jezza's fans are clearly quite comfortable with all these things.
They also believe "if you are not with us, you are against us," therefore if you're not an uncritical worshipper of Saint Jezza, you are sub-human and not worthy of civilised discourse. You're a Nazi. You can be, should be and probably will be subject to physical violence.
Of course, worst of all are the venal, Blairite traitors on the soft-left. Their ideological impurity is a stain on the left, that must be expunged even more vigorously than the evil Tory scum.
For those of us on the right, being regarded as sub-human by people on the left is nothing new. Their astonishing arrogance in knowing that their political beliefs make them morally superior has been a source of endless insulting behaviour in the past. Of course, now that the most active and virulent form of left-wing politics has taken over, it's a schadenfreude treat to see Blairites who used to have exactly the same attitude (sans the violence, of course) discover what it's like to be regarded as sub-human by a thug with a different opinion.
And these people are, in their hearts, thugs. I make no apologies to any Labour voters I offend. You regard violence as an acceptable form of political bargaining. If you didn't, you wouldn't have voted for someone who says emollient things but does not do anything to stop Jew-hatred, violence or abuse.
If you're hard-left, at least you're being congruent with your beliefs. This doesn't make you a good human being, though.
If you're soft-left and you voted Labour at the last election, I can only describe you as a self-hating, tribalist moron. Your party hates you more than it hates the Tories. Your blind adherence to "I must vote Labour" is self-defeating stupidity.
Look at the spread of abuse, violence and hatred in politics. Look hard at yourself. If you think that actively hating someone or abusing or committing violence on them for their political beliefs is somehow OK or if you voted for these people, then you're all the problems with society today. You personally. It's not "capitalism" or "free markets" or "bankers" or "Tories" or "libertarians" or "evil right-wing media". You have no right to look down at anyone. You have no moral high ground. Your beliefs or your blind loyalty to a party are poisonous and dangerous.
You are the problem.