Ahead of intense international climate negotiations at the Le Bourget center in Paris, activists protested in absentia by lining the Place de la République outside the convention center with empty pairs of shoes.

In light of the terrorist attacks on Paris earlier this month, city officials cancelled the protest for security reasons. The Guardian reports over 10,000 pairs of shoes now stand in place of the 200,000 participants originally expected to take part in Sunday's march. The result is stunning in its silent impact.