-Albus Dumbledore murdered his own sister to cover up the fact that she was born non-magical
-Dumbledore's father was a mass murderer, who killed three young non-magical boys out of hatred for non-magical people
-Dumbledore has been hiding his secret romance with a mass-murderer for months now
-Dumbledore has an unhealthy interest in Credence Barebone that he is doing his best to hide