PARIS — Thousands of demonstrators took to the streets of Paris and other French cities on Sunday to call for more ambitious measures in the fight against climate change. The nationwide protests come after the lower house of parliament this week approved a climate bill aimed at curbing greenhouse gas emissions that environment activists say doesn’t go far or fast enough. “As it stands, the (proposed) law is a climatic and social failure,” said a group of climate campaigners, “Ensemble pour le climat” (“Together for climate”). Greenpeace France denounced “the government’s refusal to take action for climate.” Activists blame President Emmanuel Macron, who has been very vocal about his support for climate change action, for having “weakened” a set of measures initially proposed by a panel of 150 citizens who had worked for months on the issue. The bill, which will now be debated in the Senate, includes a ban on domestic flights under two and half hours that can be done by train and measures to support renovation of high energy-consuming buildings and encourage greener cars. Meanwhile, French newspaper Journal du Dimanche reported Sunday that a referendum to include the need to preserve the environment into the French Constitution, promised by Macron, won’t be able to take place. The change requires a parliamentary vote.