I can't see how having an anarchistic mindset must necessitate a person being chaotic. Anarchy by definition is considered living outside the dictates of others, but still behaving in a sociably accepted way. The anarchist (by their own definition) we see at G8 meetings are to my mind not anarchists at all, but poor little rich boys and girls trying to piss off mummy and daddy. Anarchist in it's purest form is that which was depicted in V for Vendetta. Controlling your own life, but not to the detriment of others. Off course it would never work, cos by nature man is selfish and self serving, which immediately makes Anarchy, like any other concept, communism, socialism, religious fundementalism, even democracy doomed to failure. Great in theory, but unworkable in practice.
Regarding Nemesis, however, her being an anarchist is somthing that is totaly out of left field. The two earlier Nemesis incarnations have been firstly driven by righteousness, as in Ernest St Ives was an abomination who should not have been. While the second was law abiding to the point of leading Gamma for the gov, without the need for mind controlling technical devices. It will be interesting to see what kind of Anarchist, Nemesis is depicted as, the pure 'V' sort or the selfish type we see at demo's.
Edited for the sake of it :P