Much of Corbyn's shadow cabinet has resigned, based on the idea that Corbyn didn't work hard to enough to stop the Leave campaign.
Never mind that many in one of the main political parties, which happens to be in power, pushed for the referendum and that the next Prime Minister of the UK is likely to be that party's public face of the Leave campaign. Never mind that the referendum was put out there in order to make sure that Labour lost the last election.
No matter what happens, it's always the fault of The Left. Silly Labour and their Brexit referendum! That dastardly Corbyn, making those Tories hit themselves over and over! Mean, nasty, Left! Always putting themselves first!