Health of the society depends on the behaviour and attitude of people towards each other.
The criminologists use the homicide rate to make statements about the health of society because health of the society depends on the behaviour or relation of people towards each other. Homicide refers to the killing of one human by another. If the relation between people is good and there is peace in the society than we can say that the society has good health.
While on the other hand, if there are more killings and murder in society then the health of the society is very bad so that's the reason that criminologists use the homicide rate to form statements about the health of society.
