(Credit: HBO/Helen Sloan/John P. Johnson) The successful launch of “Westworld,” a series set in a Wild-West resort populated by robots, has revived a decades-old argument about onscreen violence. The premise of the series, which is based on a 1973 movie written and directed by Michael Crichton, involves people coming to a park to have their way — in any way they want — with its robot “hosts.” “Westworld” could become HBO’s biggest new show since the launch of “Game of Thrones,” the blockbuster fantasy series that has also drawn criticism for graphic violence, much of it directed against women. Salon spoke to Tom Nunan, a veteran of television and film — he was president of United Paramount Network, a founder of production company Bull’s Eye Entertainment, and one of the producers of “Crash” and “The Illusionist” — who also teaches at UCLA’s theater, film and TV school, about the current state of TV violence.