So from an atheist perspective, universal good and evil are useless concepts. Instead, it is better to tag behavior as specimen specific beneficial or specimen specific detrimental and then further catagorize via long or short term consequence.
The only way to have a universal right and wrong for even a part of the universe, it must originate from outside the boundries of the universe. Random energy and chaos cannot produce reason and order. The only way for something like that to appear from outside the boundreis of our universe is if it comes from the designer.
It seems to me that there are two kinds of people we have to deal with:
Those who can formulate a moral code of behaviour for themselves and others with whom they form a society from their own natures. That is those who actually possess what we may call a conscience.
Then there are those for whom any moral behaviour must be given to them. Not only that but it must be given as an absolute. In addtion, it must be backed up with significant
external rewards and punishments. This group seems to lack that which we may call a conscience.