These protest-laden times couldn’t be more receptive to the stirring “Everybody to Kenmure Street,” which speaks to a moment when the machinery of institutional cruelty was ground to a halt by righteous neighborliness. Felipe Bustos Sierra’s immersive documentary about a consequential block party — one that happened in Glasgow, Scotland, in May 2021 — is not simply one of the year’s best films, but a potent reminder of where meaningful change begins.

On the morning in question, a dawn immigration raid initiated by the U.K. Home Office snatched two men from the diverse, tight-knit community of Kenmure Street, and the timing couldn’t have been more hostile: in front of a mosque on the first day of Eid. And yet, what reaction is more gratifying than residents of all stripes stepping outside to do something about it?

Word spread quickly, and soon a throng of smartphone-wielding citizens had surrounded the immigration enforcement van, which couldn’t move because one enterprising, early-arriving activist had slid underneath it. Soon, the police were there in force, but the dedication of the outraged, chanting crowd demanding the men’s release ensured this would be no ordinary standoff.

Sierra, a Scotland-based filmmaker born to Chilean exiles, whose previous film recounted the solidarity of Scottish factory workers against Chile’s dictatorship, primes us over the credits with an archival montage of his adopted country’s disputatious lineage, from suffragists and trade unionists to independence campaigners and Glaswegian schoolgirls advocating for their asylum-seeking classmates, all set to the serenading lilt of Lee Hazlewood’s classic 1966 ache “Your Sweet Love.”

But the tale of that Thursday’s spontaneous, viral resistance is narrated by its proud participants. Each is interviewed separately, looking directly at us to burnish the intimacy. We aren’t told their names — save human rights lawyer Aamer Anwar, a key public figure that day — because it isn’t the point. Everyone’s observant, humor-filled testimony both individuates and connects them to each other. Over those hours, the many became one. They became witnesses unsatisfied with mere witnessing.

The interviewees who didn’t want to be filmed are played by actors, including executive producer Emma Thompson wedged between an undercarriage and pavement as the unidentified van protester. That this doesn’t play like jokey stunt casting speaks to the spirit of communal, all-hands-on-deck engagement. Who got under the van wasn’t important. That someone did was.

Sierra also contextualizes Kenmure Street within the long shadow of slavery, industry, imperialism and grassroots opposition. It’s a valuable history lesson in echoes and dignity, one of the film’s more moving illustrations of the legacy of demonstrating for what’s right.

As it happens, Sierra himself wasn’t there that day. He chose to stay at home, watch on the news, and — as someone here might, post-Minnesota — assume the worst. “Everybody to Kenmure Street” is the ultimate what-did-I-miss movie, a life-affirming corrective, his respectful curiosity and everyone’s cherished memories in singular harmony. Like Sierra, you’ll wish you’d been there, to experience the world made better by those who show up. This is the next best thing.

‘Everybody to Kenmure Street’

In English, Urdu and Punjabi, with subtitles

Not rated

Running time: 1 hour, 38 minutes

Playing: Opens Friday, Oct. 2 at Laemmle Royal