You can sign the Blue House petition in a couple of minutes
https://www1.president.go.kr/petitions/594102 (t/n: the petition is about the disclosure of the personal information of the offender couple and the application for charges of murder for the abuse and murder of 16 months old adopted child Jungin)
(t/n: here's the background story: https://en.yna.co.kr/view/AEN20201111011900320)
t/n: The child has 2 names Yulha (her new name?) and Jungin (her real name or vice versa), we will use Jungin for simplicty