Noughts and Crosses by Malorie Blackman
Published by Corgi, 2006
With echoes of Romeo and Juliet, Noughts and Crosses is an electrifying, bittersweet love story set in a society divided by racial bigotry and a world rocked by terrorism. Sephy (a Cross) is the daughter of the Deputy Prime Minister. Callum is the son of a Nought agitator. United by a shared sense of injustice as children, and separated by intolerance as they grow up, their desire to be together begins to eclipse all family loyalty sparking a political crisis of unimaginable proportions.