Comment by RhysU

If I defenestrate a frail 80-year-old that they were eventually going to die naturally is not a murder defense.

If a robust 80-year-old lived next to the frail one it is also not a murder defense.

If the frail one was a stubborn old mule it is likewise not a murder defense.

Maybe the neighborhood is better without the dead one, but that doesn't change that they were murdered.