Last year, on Jan. 7, two gunmen stormed the offices of Charlie Hebdo magazine, killing 12 people.

Fresh flowers, wreaths and posters still line Place de la Republique, the restaurants on Rue Bichat and the Bataclan. Each day, the city is coated in rain, but the Parisians return to these sites in memory of those they lost one month ago.

Thousands of demonstrators gathered in central Paris and formed a human chain along the route of a long-planned protest march that was banned by the French government in a security crackdown following the Nov. 13 Paris attacks. Nearby, thousands of shoes, some decorated, were placed at the Place de la Republique to symbolize the many feet that could not march because of the ban.

Thousands of Parisians have turned out to pay tribute to those killed in last week's attacks.