Everyone in the world could agree that X is evil and Y is good and I would still say that they are not universally evil or universally good. Good and evil are just labels that people put on things, or people, they like or dislike - nothing more and nothing less. I would agree that some things are more evil than others, just as some people are more evil than others, but, for the most part, even the most abhorrent things are not purely evil - just as the most laudable things are, for the most part, not wholly good. There are few things, if any, that are not, in fact, a mix of the two - albeit possibly mixed so inconsistently that the deed or person is prominently one and only slightly, minutely the other.