Say what you will about how Harry Potter increases in complexity and darkness as it progresses but I think JKR sets the tone of the series pretty well when she has Dumbledore play ding-dong-ditch with a baby in the first chapter
Dumbledore didn’t even ring the doorbell/knock. He just dropped a bundle of blankets with a baby and a note inside on the Dursleys’ doorstep. For all he knew they could have been on holiday, only to come back days later to a baby who died of exposure/starvation/dehydration/etc. on their front porch. It was McGonagall who did the due diligence by spying on the house all day, thus ensuring the family was in fact at home. If anything, J.K. Rowling instigated the dark themes of the series by having Dumbledore be Harry’s mentor instead of the amazing Minerva McG #McGonagall for guardian of the year #Dumbledore should never have been trusted with the responsibility of caring for children