(CNN) The assist surely wasn't intentional, but Donald Trump has provided Al Gore with a heck of an ending for "An Inconvenient Sequel: Truth to Power," adding a sense of urgency to this dutiful follow-up to the documentary that officially wedded Gore, Hollywood and environmental activism, "An Inconvenient Truth."

It's hardly a spoiler that the hopeful notes that Gore sounds during this decade-later sequel about climate action -- including his efforts to smooth the way for the Paris Climate Accords -- are delivered a conspicuous setback by Trump's decision to pull out of the agreement. In terms of rallying the faithful, it's hard to think of anything that would do more to call attention to the film and Gore's 25-year crusade.

Working with new directors, Bonni Cohen and Jon Shenk, but hitting many of the same themes, the movie follows Gore around the globe -- India, Silicon Valley, Greenland, the Philippines -- as he meets with leaders and presses the case about the threat of climate change, as he seeks to educate activists. It's a variation of the presentation he delivered in the earlier film, presented with alternate amounts of humor, exasperation, faith and flashes of anger.

Gore also finds support close to home, from the mayor of Miami (he visits when the tide has risen, flooding the streets) to the mayor of a conservative Texas town that has aggressively moved toward renewable energy.

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