What is considered good (or best) behavior is culture-specific… — it’s even specific to sub-culture.
How should a culture or sub-culture choose what it’s cultural ethics are? Are such choices even explicitly made? … by a leader?
Are more advances societies and cultures more explicit with respect to the kinds of behavior which are considered ethical vs. unethical for that society / culture?
This one line in Bob Dylan’s “Subterranean Homesick Blues” brings it to a point:
Don’t follow leaders
Watch the parkin’ meters