the existence of fascism gives us all terrible opportunities to see how utterly brainwashed and detached from their own hearts and emotions (and thus their full selves) people can become.
Really listening to our own hearts and souls makes it -much easier- to tell right from wrong.
But it also requires people to be vulnerable to witnessing pain.
And if you can be made to believe it's somehow "weak" to become vulnerable, or feel doubt, it's a very short walk to becoming a monster- for many.