Don't hide behind the law, it won't help you here. If you set fire to a building with people inside and they are killed that is murder because any person knows what can happen when you set fire to a building full of people. Such it is with launching drone strikes on family homes or town streets or marketplaces or restaurants. It is murder. No sane person bombs a home without the expectation that anybody inside or nearby may be killed. Calling those deaths accidental is a sick joke.

The law doesn't have a specific term for people who just have a callous indifference to the lives of others, but people throughout human history have used a lot of terms to describe such people. Today I will use the term 'scum'.