I didn't say evil, I said bad people.
If propaganda can convince you to hate people just because of where they're from, you're not a good person.
Now, if you realize you were a bad person and work on being a good person, you can become one. If you know what you're doing is bad and have no desire to change, then you're evil.
And none of those are immutable qualities.
You're not thinking 1 quarter at a time.