cannot be said on a college campus. cnn s kyung lah explains what the professor was caught on camera saying. our nation is divided. we have been assaulted. that s professor olga cox secretly recorded lecturing to her orange coast college students not on the day s lesson but trump s election. it s an act of terrorism, one of the most frightening things for me and most people in my life is that the people committing the assault are among us. reporter: the professor s words spoken in her class on human sexuality and s now fuel for conservatives outnumbered on this liberal california campus. we obviously feel that at times we re ignored, our opinions don t matter, they should not be void, they should not be facing ridicule. reporter: the college s republican club posted the two-minute video from the anonymous student. fury followed. in threatening e-mails to professor cox we ll put a bullet in your face.