Tower of Darkness

Mitchell stood, looking out of his high rise office window at the place where the Remco building had once been and a tear plunged from his eye onto his office carpet.
It had been his pride and joy. They had called it the tower of light; technological jewel of the modern Manhattan skyline; the first ever skyscraper to be constructed from solid light.
"It is going to usher in a new age of achitecture", he'd said proudly, adressing the press at its unveiling/switching on, "An age when architects won't need builders or concrete or anything to make a great and magnificient piece of architecture other than a power supply and their own imagination".
Looking back now, he shuddered when he thought of those words.
And how he had not seen or perhaps not cared about the effect his innovation would have on the building industry putting thousands of men out of work. He should have seen it coming.
But like everyone else he had had to watch it on the news, the biggest tragedy since 9/11.
It had been two angry out of work construction workers, Mark Harris and Robert Riley who had caused it; breaking into the generator room in the basement of the building and smashing up the generator with their construction tools.
They'd said in court that they hadn't realised what would happen; that it was just meant as a protest and that they had had no intention of killing anyone.
But when the generator stopped, the building; every inch of solid holographic floor and wall had just disappeared and every person inside the building fallen out of the sky.
It was just impossible for him to think how terrifying that must have been for them; the ground collapsing suddenly beneath their feet.
Fortunately for his company, however, because the tragedy had been caused by an act of sabotage and not an accident, they hadn't been sued.
All the same. It was his fault. He knew that. It was his building that had killed those people; his lack of foresight and his ego.
But then, up from the place where his tower had stood, he saw a tower of black light rise; the commemorative monument that the city had comissioned from a rival firm; a tower of darkness to symbolise the shadow that the tragedy had cast over its people but bright white holographic angels staring out from every window to symbolise the souls of those who had been lost.
He opened the window of his office and went to join the angels.