Running, for instance, is a verb. Sexism, even by the book which you seem to worship, the dictionary, is a noun or adjective. You don't sexist. You are or are a sexist.

Does this make sense to you? Either way, that's how it works. If you choose to ignore it, like you have been so far, I don't give a shit.

As for the articles you've posted, I don't agree with their assessment. Sexism and misogyny come from the same source. Both view women as abject and object. Misogyny simply expresses that disdain more freely and violently. But the difference between the two is severity.

In order to understand this you would have to spend some time thinking about and discussing the motivation for sexist behavior. You would have to read the theory on sexism and not just Google search until you find an article which agrees with your preconceived narrative.

Yes, insisting on holding the door open for a woman is sexism. But why is that sexist? What is the underlying motivation that allows for that act of sexism? It is rooted in the psychological need to reduce women to objects; to remove their humanity. The reason why we do this is that we have a deeply seeded distrust and disdain for those we consider to be "other." The need to unconditionally separate the self from the other manifests in what is often called splitting (although critical theorists do not necessarily use that term). We establish our own identity as pure or innocent and the identity of the other as dirty, guilty and evil. It is a defense mechanism which happens both consciously and subconsciously. We inflict this idiocy on members of groups to which we do not subscribe and even, often, to our own groups as long as we can maintain the illusion that the others in the group are not ourselves.

What is novel about the actions of Elliott Rodgers is the severity of consequence of misogyny and not the misogyny itself. There's nothing newly unsettling about the principles of his hatred. It is simply shocking to see it carried out to such immense proportion.