There is no evil

 If you wish to assert there is such thing as evil, you must demonstrate it.

However, for your demonstration to be effective you will have to show that something is not just bad, but factually evil and that would require it to be pure evil.

If you cannot demonstrate these things, the best you can do is argue that when YOU don't like something YOU call it evil, which has no meaning to anyone else.

And so - if you wish there to be evil in the world, either it has to come from your own desire for something to considered evil or you have to demonstrate something that is pure evil - that no person could ever deny it is evil and that nothing good can ever come from it.

The problem then is that even the worst thing can be used as a bad example and that fact negates the entire notion of evil - except in the case it is your desire to call something evil.