Criminal parents & children

I’m not entirely sure how to say/ask this but I’m going to do my best.

Do you feel children would be better off if they never knew the evil things some of their parents have done?

(Possible trigger?)

For instance when I was 5 years old my father was sent to prison for molesting my older brother (his step son). At the time I had no idea what had happened, I just knew my dad wasn’t around anymore. Once I was older my mother told me what had happened and it brought on all kinds of issues for me.

I blamed myself for what happened to my brother, I was terrified that some how I’d do the same things my father had done, and it just added fuel to my depression & anxiety.

I’ve always felt that I would have been happier and better mentally if I’d never known.

Realistically I know she couldn’t keep it from me because of my brother.

But for kids who aren’t as close to the situation do you think it’s better for them to know or for them to be shielded from the truth?