New Tomorrow is an ecological protest group, dedicated to forcing humans to live sustainably in order to save the planet. They consist of an extreme militant section who carry out terrorist attacks, as well as other groups who simply try to live sustainably. They are currently working together with The Burn.
Just before the EMP goes off, we hear that Interpol have attempted to catch members of New Tomorrow in Madrid and Frankfurt. We learn that they are responsible for the brief shutdown of the Hang Seng a year before the events of the game.