You can only have actual good or evil if there's an actual lawmaker who dictates this.
Every human being has a concept of "should" and a concept of justice. There should be no "should" at all if we are random chemical events and simply particles in motion obeying the laws of physics...who made the laws of physics anyway? Hmm.
But you can see that people very quickly recognize a "they shouldn't do that to me" (whether it's steal my stuff or kill my dog or punch me in the face or lie about me...especially to my employer) even if they gladly do the same "shouldn'ts" to other people.
It is the nature of evil to do unto others what you *woudn't* have them do unto you.
It's the nature of evil to be interested only in one's own self, suffering, happiness, and indifferent or callous to the plight of other people.
The kind of person who would kick a person when they are down, like when Sepi saw I was already upset after being harassed for two years, then betrayed by my trusted friend, then attacked by all the bullies at ru and called a crybaby/liar/slut etc, that he asked me on forum for pictures of my breasts, he showed himself to be an evil pig. Kind of person who would microwave kittens for his entertainment.
It is the nature of evil to cause damage or pain to other people and rejoice in it.
So yes, evil reigns at ru.
And all it takes for evil to reign is for good men to do nothing.