Shouldn't 'Nazi' Balls be sacked too?

A minor Tory MP has been sacked for being in the same room as people who dressed in Nazi uniform for a party. They themselves weren't dressed as  a Nazi, but he's been finished anyway. 

As it happens I have no problems with people dressing in Nazi uniform per se. In my book people can dress as nurses, soldiers, witches, the other gender: they can dress up as anything they want. The only thing that matters is the context of such dressing up. If you dress as a SS Stormtrooper at a neo-Nazi rally you deserve to be arrested. Dressing as a nurse in a party is fine, but if you try to be a nurse when you're not you deserve arrest. 

Dressing up in any uniform for a party is fine: it's a party. It's a joke. The clothes are not illegal. We should have freedom to dress any way we like. It's called freedom. 

However I am surprised that any politican could be so stupid not to realise that their presence at a party with people in Nazi uniform will give your poltical enemies a stick to finish your career. 

The thing is this if being in the same room as people in Nazi fancy dress can destroy your career does this not mean that any poltican who is photographed dressed in Nazi uniform is finished. That their leader would have no option to sack them, that they should be kicked out of thier party for mocking the Holocaust. 

So why is the labour Shadow Chancellor Ed Balls who dressed up as a Nazi and was photographed smiling in the dread uniform still in position? Not only was he in a room of people dressed as Nazis he donned the Nazi garb himself. 

In our new world of Puritan disgust at people having a bit of a laugh at parties dressing in clothes that are perfectly legal shouldn't Balls be thrown out of labour and parliament in disgrace?