Luiz Inácio Lula da Silva's comeback victory in Brazil's presidential runoff is being read worldwide as a proof-of-concept: the far right can be beaten in a polarised, digitally-weaponised election while simultaneously strengthening environmental commitments. The Guardian frames the result through seven tactical lessons for progressive movements facing similar fights in the US, Spain, and France. The lessons are real, but so are the structural constraints that make replication difficult. The environmental numbers are striking. Amazon deforestation surged 59.5% during the 2019-2022 Bolsonaro presidency — the worst four-year stretch on record. Under Lula's administration, forest loss fell 71.2%, with the past year recording 3,335 sq km of deforestation, the lowest since satellite monitoring began in 1988. Brazil's target of zero deforestation by 2030 is now described as within reach. These are generative outcomes by any measure: preserved carbon sinks, protected biodiversity, and a demonstrated alternative to extractivist governance. The tactical playbook centres on digital mobilisation and narrative recapture. Federal deputy André Janones launched a 'Lula's Army' WhatsApp group that grew to 10 million members — roughly 8% of the electorate — using memes, livestreams, and algorithmic coordination to contest digital territory the right had dominated. Lula's campaign also went directly at Meta, accusing the platform of algorithmic bias toward Bolsonaro. Brazil's electoral court ordered corrective action. The broader lesson: progressive movements can contest the digital arena if they treat platform power as a political opponent rather than neutral infrastructure. The article correctly identifies the countervailing forces. Seven of nine Amazon-region governorships went to Bolsonaro's party. Congress is dominated by agribusiness and mining interests pushing to open indigenous lands to extraction, privatise rivers, and weaken environmental protections. Washington is pressuring Brazil to channel critical minerals to the US rather than China or Europe. The Amazon itself is approaching an ecological tipping point from accelerating global heating. Lula's victory buys time; it does not resolve the underlying power structure. The social spending dimension is underappreciated. Record low unemployment, robust wage growth, a 15% increase in bolsa família payments, and minimum wage commitments were the primary vote-drivers for most Lula supporters — not Amazon protection. The piece draws a direct line to France's gilets jaunes: environmental policy without social justice triggers backlash. This is a structural insight that transcends Brazilian politics. Green transitions that concentrate costs on working populations generate their own populist opposition. The sovereignty framing ties these threads together. Lula positioned the election as a choice between national self-determination and subordination to Trump-aligned extractivism — the Bolsonaro family's post-election flight to the US confirmed the framing. Former environment minister Marina Silva's victory speech explicitly linked social justice, sovereignty, democracy, and sustainability as a single package. The lesson for other movements: environmental protection is more durable when framed as democratic self-defence rather than technocratic regulation. The article is openly advocacy journalism, and should be read as such. It presents a genuine playbook with real numbers and specific mechanisms, but omits inconvenient complexities — Lula's own approval of destructive projects, corruption scandals in previous terms, and the question of whether WhatsApp mobilisation tactics are transferable to countries without Brazil's specific digital culture. The structural diagnosis is sound; the prescription is selectively optimistic.