Campfire. Festival throughout the Labor Day weekend, from 6 p.m. to midnight Friday, noon to midnight Saturday, noon to 11:30 p.m. Sunday and noon to 10 p.m. Monday at Passim, 47 Palmer St., Harvard Square. Tickets are available as $25 festival passes and $10 daily passes.

Passim’s twice-a-year homegrown folk and Americana music festival runs throughout the long weekend and brings some 80 acts to the stage. (Haiti’s Rebecca Zama is above.) Since the goal is to develop talent and celebrate the local music scene, organizers say the shows typically blur the line between performer and audience member. The all-ages event, now in its 19th year, has a full schedule here.

Dire Literary Series with Himes, Salisbury and Page from 7 to 8:35 p.m. Friday at Out of the Blue Art Gallery Too, 541 Massachusetts Ave., Central Square.

Curator Timothy Gager’s venerable monthly reading – now deep in its 16th year – brings to the lectern physician and author Julie Lekstrom Himes, whose novel “Mikhail and Margarita” fictionalizes the life of Mikhail Bulgakov, physician and author of the long-censored classic Russian satire “The Master and Margarita.” The book looks at that censorship from the perspective of Putin’s 2017, but also features a dangerous love triangle between Bulgakov, the woman who inspired the novel and a secret police agent. Along with Lekstrom Himes comes Luke Salisbury, author of “The Answer Is Baseball” and the novels “The Cleveland Indian,” “Blue Eden” and “Hollywood & Sunset,” and New Hampshire poet Ivy Page (also co-author of the widely used textbook “The Creative Writing Workshop: A Guidebook for the Creative Writer”). After the featured readers come four 15-minute open-mic slots. Information is here.

Harvard Square Ghost Tours from 7:30 to 9 p.m. Friday, Saturday, Sunday and Monday meeting at The Harvard Coop, 1400 Massachusetts Ave., Harvard Square. Tickets are $20 for adults, or $12 for youth.

Storytellers lead nighttime strolls around Harvard Square, through the Harvard campus and by the Old Burial Ground with tales of murders and mysterious deaths. The trip is leavened by laughs, because this is an all-ages tour. It runs through Nov. 5. Information is here.

Bread & Puppet Theatre’s “Our Domestic Insurrection Circus” from 3 to 4:30 p.m. Sunday at Cambridge Common, near Harvard Square. Free, but donations are welcome.

The shaggy, 54-year-old Bread & Puppet Theater troupe is back from Vermont for its annual end-of-summer visit to remind everyone what hippies look and act like, and also what fun plus political discourse feels like. Bread & Puppet uses a visually rich, slapstick style of street theater filled with huge puppets made of paper maché and cardboard along with masked characters, political commentary and a brass band for accompaniment. “Our Domestic Insurrection Circus” introduces a political party, the Possibilitarians, whose platform promotes a “thousand alternatives” to capitalism, as well as “restoring the sky to its advisory capacity for all aspects of humdrum life.” Candidates will be nominated and audience members invited to sign up to as volunteers in constructing the party. In case of rain, the event will be held at First Church in Cambridge, 11 Garden St., Harvard Square. Information is here.

Toni Bee at the Lizard Lounge Poetry Jam & Slam from 7:30 p.m. Sunday to 1 a.m. Monday and from 7:30 p.m. Sunday to 1 a.m. Monday at The Lizard Lounge, 1667 Massachusetts Ave., between Harvard and Porter squares. Tickets are $7.

Toni Bee, Cambridge’s former Poet Populist, 2016 Inaugural Poetry Ambassador of Cambridge and new Simmons grad preparing an “upcoming best-selling poetry book” called “21 Again” is featured poet at the Jam & Slam, backed by jazz by the Jeff Robinson Trio. High-powered competitive slam poetry leads off. Information is here.