The BBC is apparently doing a report on Scientology. It appears that things got a little tense. In this clip the BBC's reporter, John Sweeney, is conducting an "interview" of sorts. (You may want to turn down your volume before watching.)
Actually, I think his explanation is credible. He seems to be in control of himself while he is screaming at his interviewee, and to be doing it for effect-- and to make a point.
Not that I am endorsing such an approach to interviewing . . . .