Robert Downey Jr. walks out on pricky Brit interview

Krishnan Guru-Murthy is developing a formidable gift for pissing off the talent. Quentin Tarantino gave the Channel 4 presenter a spectacular smackdown during the media blitz for Django Unchained when Guru-Murthy asked for a comment on screen violence and Sandy Hook. 

Talking to Downey Jr. about Avengers: Age of Ultron in London yesterday (April 21), Guru-Murthy strayed a little far into the actor's personal space with questions about his "dark periods." 

Uh-oh!

That friendly punch Downey Jr. gives him on the way out looks like it had a little more force than was probably necessary.  Or not.