Can I rant about something that royally pisses me off?

When someone does something stupid to land themself in jail and people start posting all over fb “free him” “you’ll get soon”

It makes me so damn mad. A 21 year old family member of mine killed a 17 year old and literally at least 30 friends of his and other family members posted online about how he needs to be freed and they just have no regard for the life he took nor the family of the boy that he robbed of his life. Idc if he’s related to me I can admit that he was wrong and I’m pissed and hurt for the family of the victim