Everyone's an evangelist whether they know it or not. You may not be an evangelist for some large, organized religion or cult, but I guarantee you’re an evangelist for some belief. You are likely affronted by my calling you an evangelist because the term has taken on some very negative connotations in our age. The fervor, pushiness, judgmental nature, and self-righteousness of many evangelists likely fuels our aversion to the term - and rightfully so. Nobody wants to be evangelized because nobody wants to be objectified, and objectification is exactly what many evangelists do to potential converts. The evangelist's subject (or victim) is often merely seen as malleable gray matter - a fertile host into which the evangelist (or parasite) can inseminate their ideas.
As an evangelist for Christianity, I take exception to these negative connotations of evangelism, though I certainly understand and agree with their application most of the time. Such an acknowledgement of evangelism’s misuse is a sober warning to me that even in my noblest of desires, my self-centeredness may be the overwhelming motivation with which I lead. But potential egoism isn’t the only way in which I might err. When evangelism fails to be a good thing, its failure must be seen as in one of two areas: the objectification of another (which simultaneously entails the self-centeredness of the evangelist) and/or the untruth of the message - the "good news" being preached.