DiCaprio took to social media to decry the controversial decision, reports vanityfair.com.
The Revenant star posted on Facebook, "Today, the future livability of our planet was threatened by President Trump's careless decision to withdraw the United States from the Paris Agreement. Our future on this planet is now more at risk than ever before. For Americans and those in the world community looking for strong leadership on climate issues, this action is deeply discouraging."
Thousands march in Washington to protest Trump climate policies
He added, "Now, more than ever, we must be determined to solve climate change and to challenge those leaders who do not believe in scientific facts or empirical truths. It is time for all of us to stand up, organise, fight back, and channel our energy into grassroots political action."
DiCaprio ended the post by pointing his followers to "organisations on the front lines of this fight," including Indivisible Guide, NRDC, Stand Up America and Before the Flood.
Before the Flood was also a 2016 documentary co-produced by DiCaprio on climate change.
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