[jiggy2011]

You don't always have the option of not picking a group, see "you're with us or against us". Each group will demand that you identify with them or treat you as a member of the other group.

[teddyh]

I’m reminded of Philip K. Dick’s The Chromium Fence (1955):

’I’m not!’ Walsh shouted futilely. ‘I’m not a Purist and I’m not a Naturalist! You hear me?’

Nobody heard him.