Its stupid to say one is evil for some results and intent while another is good for the same results and intent. What else is there to judge an action on besides results if your stupid like the judicial people and intent? But thats to be expected from christians who judge "criminals" by the results instead of the intent.
From what I get, Satan symbolizes evil as God symbolizes good. People who do good deeds are following God's will. People who commit evil deeds are doing the Devil's bidding. Evil only exists because of the Devil. He orchestrates all evil deeds on Earth. People are evil because of Satan.