Alternatively it can be seen as a lesson for the low to not allow the middle to use them as a weapon. If they want to avoid this same result they'd need to take over their own revolution, not be led by the middle.
By Orwell’s definition you can’t depend on The Low to defend themselves
> The aim of the Low, when they have an aim -- for it is an abiding characteristic of the Low that they are too much crushed by drudgery to be more than intermittently conscious of anything outside their daily lives