Can Livestreaming Violence Reduce Violence?

The decision of the Department of Defense to livestream the execution by firing squad of the Fort Hood mass murderer, Army psychiatrist Nidal Hasan, is in the news. To be completely transparent, I support capital punishment in rare cases. How can you protect guards and other prisoners if a murderer with a life-in-prison sentence has nothing else to fear? Is a life of solitary confinement a guarantee against an escape attempt? And what about murderers who are paroled? Think about rape, robbery, and home invasion victims? Is there a deterrent effect knowing that capital punishment is the mandatory sentence for a murder committed during those crimes?