Subject: Police Operation

There was a video clip embedded Unthinkable - 'H' kills scene, link: https://www.youtube.com/watch?v=nOo9SeXdA-8

It was from the movie, "Unthinkable." The premise of the movie is as follows:

FBI Agent Helen Brody (Carrie-Anne Moss) races to discover the location of three nuclear bombs, each programmed to detonate in a different city. When authorities arrest terrorist suspect Younger (Michael Sheen), who announced the murderous plot in a video, special operative Harold Humphries (SamuelL. Jackson) joins Brody in the interrogation. He takes escalating measures to extract answers from Younger, but Younger clams up. Brody begins to question their brutal methods as time ticks away.

So, where should the line be drawn with regard to how far law enforcement can go when conducting an interrogation?