I've murdered half the town

Harry stood silently outside the house, so small on the outside, but so big in. His wand was in his hand, clutched tightly in anticipation. Slowly, he raised his hand and knocked. The door opened almost instantly, Dumbledore stood on the other side of the threshold. Lightening fast, Harry raised his wand and hissed the death curse. The white haired man fell to the ground moments later. Harry stood in the doorway a few moments before moving when no one else came to inspect the sound. He walked through the house to the kitchen, threw open the door. Someone screamed. He imagined what he looked like, blood splattered across his face and clothes, wild look in his eyes and dark circles under them.

He giggled a second before he started firing off the death curse; each shout was met by the thump of a body falling to the ground. When no one moved, he stood panting in the middle of the bodies, each in some stage of approaching him, wands half drawn. Then someone stared down the stairs, running franticly and stumbling a lot. Harry turned to the door wand raised, curse ready on his lips. A small red headed girl appeared in the doorway moments later. Harry laughed brokenly at her wide eyes.

"Harry?" the girl spoke softly. "What happened?"

Harry spoke the torturing curse, the spell hit Ginny in the chest and down she went, falling to the ground screaming. Harry laughed at her screams, danced crazy circles about her writhing form, and clapped. Suddenly, he stopped and released the curse, looked at Ginny but faced a different direction. How funny she looked from the corners of his eyes.

"What are you doing?" she sobbed.

Harry turned to face her, placed fingers to his mouth and giggled. "Why I'm killing you, silly girl," he said and fired the killing curse. He mumbled a spell that played music and danced in dizzying circles around the bodies. He hummed along to the tune before laughing crazily. He raised his arm suddenly and began to waltz, lying his head on the invisible chest of the man that wasn't there. He danced up the stairs, out of the house and again down the street, setting fires to buildings as he went.