We were 'blissfully ignorant''of' the problems that had occurred.
She was 'ignorant' about the dangers of the drug.
They were 'ignorant' [='unaware'] 'of' the facts.
(..) Those are good references, aren't they? I don't know them. Take a seat. If you don't know them, you don't know anything about music. I don't think I'm ignorant when it comes to music. - Even if I don't know you "Sool" whatever... - No. "Kool & the Gang". What about you? (..)2011 The Intouchables