Disturbing bit of stuff...
"Harry Potter."
The great hall broke out in whispers as every eye turned to look for the Boy Who Lived. He was easy to find, as he was the only first year not wearing robes. He was dressed in some sort of Muggle boots and pants with big pockets half way down the leg and a turtleneck shirt. Covering all of that was a long trench coat, that hung oddly on the boy's frame, as if several heavy objects were in it. All of his clothing was black, with the sole exception of a silver cross hanging around his neck. He stood at the back of the group of unsorted first years, his feet apart and his hands behind his back.
Harry brought his hands down to his sides and his feet came together before he marched up to the stool the Sorting Hat was on. He stopped there and looked at Dumbledore. "Are you certain you want to do this, old man?"
The great hall fell silent at the contempt in Harry's voice, watching the scene unfolding before them. Professor Snape snarled but before he said anything, Harry glanced at him. "Shut up, minion. I already know you're so far up the old man's rear that his word is your law." Harry looked back at Dumbledore. "I'm offering you one last chance, old man. Let me go, or everything that happens after this is on your head."
"It really is for the best, Harry," the Headmaster said.
Harry Potter stared at him for a few seconds. "Fine. Just remember, fool, that you brought this on yourself."
Harry turned to the sorting hat and picked it up, holding it in his hands. "When the Hogwarts letter came, I sent back a letter, saying I did not want to attend this school. The old man there, sent his greasy haired minion to try and change my mind. I refused a second time, and a third." Harry looked at Dumbledore again and one hand dipped into his pocket. "For a thousand years, if a muggleborn or half blood student refused to attend, they were Obliviated of all knowledge of magic, and their magic was bound, which is what I wanted."
The people in the great hall were all staring at Harry in complete shock. Harry continued talking, ignoring everyone but Dumbledore and Snape. "When they persisted in insisting that I attend, I bbroke Minion's arm, jaw and wand." Harry looked at Dumbledore. "Then, the old man there threatened my family and friends, threatened to use his magic on them. Under duress, I agreed to come to this school, and I am here." He looked at Dumbledore again. "However, old man, I never said I would attend your school."
Harry dropped the sorting hat on the floor and took three steps back. Even as he took that last step, and strange popping sound came from the sorting hat and it burst into flames.
Streams of water came from several wands as most of the wizards sat watching in horror as the sorting hat was destroyed. Whatever fire Harry had started was not put out by the water, and it wasn't until Professor Flitwick covered the hat in mud that the flames died out.
When the fire was gone, every eye turned back to Harry Potter, who was standing at parade rest again. "Maybe now you will understand, old man. I am a soldier of God, and your destruction is my only purpose."
As he finished speaking, Harry dropped two cannisters at his feet and dropped to the floor, rolling away even as smoke starting billowing out of the tubes. Three more smoke grenades were set off, and between smoke and panicking children it took the staff nearly ten minutes to restore order in the great hall.
Harry Potter was nowhere to be found.
Storyline: After being saddled with the freak, Vernon found an extremist Christian group, and with Petunia's help, managed to convince them that there were still witches and wizards out there, hiding among real people.
The Dursley's gave Harry to them, to save his soul and Harry is brought up as the perfect brainwashed soldier of God, trained in ways that the Inquisition would have approved of. Scourging, self flagellation, hours of indoctrination and instruction on God's word.
Along the way, they manage to capture a few wizard, including one minor Death Eater. The Death Eater's rants about wizard superiority, mudbloods and the complete worthlessness of Muggles only serve to confirm everything Harry is being taught.
Along the way, Harry is trained in small unit warfare and terrorist tactics. For the final proof of the righteousness of his cause, Harry is faster, stronger and quicker than he should be, and cannot be touched by wizard magic. His magic has formed a shield, that protects him from the evil attacks of the demons and their human servants. Harry, of course, believes it is his faith that protects him, and will not be swayed from his beliefs.
Note: I am intrigued by this plotline, but have decided not to write it. Besides the whole religion controversy, I cannot decide if it would be better to let Harry win his war, destroying the wizard world of Britain, or to have him "saved" and deprogrammed.