A police officer pleads for mercy on the pavement before being shot in the head by masked gunmen during an attack on the headquarters of the French satirical newspaper Charlie Hebdo in Paris, France, on January 7, 2015. Gunmen have attacked the Paris office of French satirical magazine Charlie Hebdo, killing 12 people and injuring seven, French officials say. At least two masked attackers opened fire with assault rifles in the office and exchanged shots with police in the street outside before escaping by car. President Francois Hollande said there was no doubt it had been a terrorist attack "of exceptional barbarity". A major police operation is under way in the Paris area to catch the killers. Screen capture via ABACAPRESS.COM