Activists formed a human chain instead of the mass march originally planned for Sunday.

Climate activists left shoes to symbolize the mass march canceled by the French government.

Marchers from the NPA (New Anticapitalist Party) protest France's limits on civil liberties under its new state of emergency.

Tear gas canisters spew, making the air unbreathable at Place de la République, Paris.

French police push protesters on bicycles.

Demonstrators in Place de la République, in Paris, move away from clouds of tear gas.

Police trample the memorial left for victims of the November 13 Paris attacks to corral climate protesters.