1. Everyone's right to life is protected by law. The  death may not be inflicted on anyone intentionally, except by  execution of a death sentence pronounced by a court in  where the offense is punishable by law.

2. Death is not considered to be inflicted in violation of  this article in cases where it results from the use of force  made absolutely necessary:

(a) for the defense of any person against  unlawful violence;

(b) to effect a lawful arrest or to prevent  the escape of a person lawfully detained;

(c) to put down, according to law, a riot or  insurrection.