I don't think there's a need to terminate the interview at the moment of the incident, especially as they're a precious window into the culture of a company. Yo

I don't think there's a need to terminate the interview at the moment of the incident, especially as they're a precious window into the culture of a company. You may learn a lot from watching the reaction of the remaining interviewers over the remainder of the interview. Assuming that the interviewee chooses not to pursue employment at the company, it seems optional but appropriate to leave constructive feedback with the recruiter/hiring manager on the way out.