It’s easy to forget sometimes that, alongside everything else that’s crowding your news brain right now, deforestation in the Amazon is still a massive crisis for the planet, one that is fast reaching a point of no return regarding our ability to curtail its terrible impact.

Movies love superheroes that take on their villains with big-stage swagger. But documentaries thrive on underdogs and when it comes to standing up to the illegal logging and mining that’s flattening South America’s leafy canopy, Indigenous people have more than shown their mettle against buzzing chainsaws or buzzy politicians. The energetic dispatch “We Are Guardians” from directors Edivan Guajajara, Chelsea Greene and Rob Grobman, is the latest advocacy feature to bring cameras into the Amazon to juxtapose beauty and devastation — as well as a David vs. Goliath battle as it’s experienced on the ground.

We meet soft-spoken family man Marҫal, from the Indigenous territory of Arariboia, whose decades-old group of organized, unpaid, weapons-trained and face-painted “forest guardians” take the fight directly to loggers, wherever they can sneak up on them, at great risk to their lives. (Their foes are armed too.) Though Marçal speaks eloquently of his holistic view of their mission — he’s protecting the water, the trees and the region’s wildlife — he also shows concern that the Amazon’s uncontacted peoples stay free of interference too.

Meanwhile, activist Puyr Tembé from the Alto Rio Guama territory is working hard to get more Indigenous women into politics and in seats of power — a tall order at a time (filming mostly took place between 2019 and 2022) when rapaciously pro-agribusiness Brazilian President Jair Bolsonaro openly treated the rights of Indigenous peoples as dismissable and a nuisance. As Tembé articulates, it takes a reforesting of the mind and heart to catalyze progress.

These dedicated warriors certainly earn our admiration in the good/evil binary of the conflict, but complications help give the documentary shape, as in the attention given a crusty logger named Valdir, who agreed to be featured on camera. A logger for over 50 years since he was 8, he knows exactly what’s wrong with his job, but is trapped in the maw of an industry as a means of survival for his family. Even a wealthy landowner can come off like a victim here, as is the case with Tadeu, a businessman who in the 1990s started an ecological sanctuary on his 28,000 hectares, and whose complaints to the Brazilian government about illegal encroachment on his land fall on deaf ears.

There’s a comprehensiveness to how “We Are Guardians” lays out a big, knotty problem of environment, politics, geography and business — internationalized yet hyper-local — while spotlighting the Indigenous push-back efforts. But the movie’s verité style of thumbnail portraiture doesn’t always dovetail neatly with the other elements: the unloading of facts, getting those drone shots in and projecting a thriller-like atmosphere. Coming on the heels of the aesthetically sharp and immersive “The Territory” from a couple years ago (which covers some of the same ground), “We Are Guardians” feels more like a highlighting of issues than a documentary journey that takes you somewhere.

But sometimes, it’s whatever gets out the message, right? When it comes to climate change, our media diet is starved. So if you need that refresher course in the importance of saving the Amazon, “We Are Guardians,” like a well-made pamphlet, does the job with plenty of efficiency and heat.