Kill Them While They're Young

Sirius. Dumbledore. Hedwig. Dobby. Fred. Remus. All dead.
Harry knew he had to stop Voldemort to prevent more deaths. So he did - and he died to destroy Voldemort completely.
But the killing continued as the remaining Death Eathers rampaged through the country.
Ginny. Harry mourned… and secretly thanked Merlin it hadn't been her brother.
Ron's death pushed Harry over the edge. A Timeturner was easily obtained and Harry went raging against time and destiny, back to when Voldemort was just Tom Riddle, a dirty orphan.
No one cried - not because a tyran had been killed, but because no one cared.