If you've been paying any attention at all to the 15 billion Deus Ex 3 videos that Eidos has been posting over the last year, you might have picked up the idea that this whole human cybernetic augmentation thing isn't something that everyone wants around.
The initial Sarif Industries trailer set the stage for the concept, a technology that replaces body parts while simultaneously enhancing human ability. Like everything that threatens the established cultural norm and pushes the envelope of human social statuses, augmentations are a source of major controversy in the world Deus Ex: Human Evolution.