So this is the guy that a Columbia professor invited as a guest speaker?

<p>Look, if you guys want to seriously argue that speakers should not be invited because they have “obscene lyrics” or are “immoral,” then I think you should seriously consider whether Columbia is a good school for you. Students and faculty invite controversial speakers all the time, because we love to hear different points of view. Remember in 2007 when Columbia invited Ahmadinejad?</p>