The guest, a professor emeritus in the School of Communication at SDSU named Peter Andersen, replied by stating something to the effect of This is not the Third Reich; you can say what you want, one witness said.
Soon thereafter, Donald Benke announced he was not feeling well, employees said. He said he was taking a sick day and immediately left the studio.
About 20 minutes later, Peter Benke, a 35-year-old photographer who lives with his parents, apparently bypassed two security doors and appeared inside the television studio, witnesses said. He slammed a heavy book onto a table and demanded to know who in the studio had called his father a Nazi, they added.
Andersen replied that he had not called anyone a Nazi but again defended his First Amendment rights to free speech, one witness said. At that point, Peter Benke jumped toward the professor and grabbed ahold of his arm, tearing the skin and causing Andersen to bleed, the witnesses said, as others in the room came to help and began escorting Peter Benke by both arms out of the studio and off the premises.