Fred, Sirius, lupin and hedwig. Colin creevy's death bothered me a lot too, actually. Maybe because he's always been so innocent. Dumbledore's didn't bother me so much because he knew he was going to die, and he welcomed death with open arms and without resistance. I respect him for that
Dobby's, Dumbledore's, Fred's, Hedwig's, and Snape's death. I cried so hard when Dobby and Fred died. I cried about Dumbledore, Hedwig, and Snape too but not as much as for Dobby and Fred. I still cry every time I read or watch Dobby and Fred's deaths.