People holds placards which read “I am Charlie” during a minute of silence in Strasbourg for victims of the shooting at the Paris offices of weekly satirical newspaper Charlie Hebdo on Wednesday

People holds placards which read “I am Charlie” during a minute of silence in Strasbourg for victims of the shooting at the Paris offices of weekly satirical newspaper Charlie Hebdo on Wednesday

People holds placards which read “I am Charlie” during a minute of silence in Strasbourg January 8, 2015 for victims of the shooting at the Paris offices of weekly satirical newspaper Charlie Hebdo on Wednesday. French police extended a manhunt on Thursday for two brothers suspected of killing 12 people at a satirical magazine in Paris in a presumed Islamist militant strike that national leaders and allied states described as an assault on democracy. France began a day of mourning for the journalists and police officers shot dead on Wednesday morning by black-hooded gunmen using Kalashnikov assault rifles. French tricolour flags flew at half mast throughout the country. REUTERS/Vincent Kessler (FRANCE – Tags: CRIME LAW MEDIA)