Well, maybe that wasn't the best choice of words. The most "aggressive" act taken against me -- which was at least aggressive against my career and standing as a graduate student, if not a physical attack or anything of that nature -- was when a student sent the department head an E-mail with a set of false allegations about poor teaching, unfair grading practices, and giving different students different requirements for assignments. (The department head isn't actually supposed to handle such things, either, so he had to forward it to
every professor in the department. Thankfully, the course director didn't buy the lies, although her assistants did come to observe a few of my future classes, just to be sure and to defuse the situation with that student.)
I'm not sure whether or not you'd call that aggressive. Had he succeeded, my life as a graduate student basically would have ended right there, but while that would have crippled my career, it wasn't "aggressive" in terms of throwing a punch. (Of course, he
was a member of the ROTC, or army training, as was one of the other two main troublemakers, so I certainly had enough nightmares about being attacked in the classroom.) If not aggressive, though, I could certainly say they were overtly hostile. That, at the very least, clearly applies.
...See why we're trained to hold an obvious air of authority? It's because of morons like these guys.