James Özden and Sam Glover at Social Change Lab wrote a literature review on protest outcomes[1] as part of a broader investigation[2] on protest effectiveness. The report covers multiple lines of evidence and addresses many relevant questions, but does not say much about the methodological quality of the research. So that's what I'm going to do today.
I reviewed the evidence on protest outcomes, focusing only on the highest-quality research, to answer two questions:
1. Do protests work?
2. Are Social Change Lab's conclusions consistent with the highest-quality evidence?
Here's what I found:
Do protests work? Highly likely (credence: 90%) in certain contexts, although it's unclear how well the results generalize. [More]
Are Social Change Lab's conclusions consistent with the highest-quality evidence? Yes—the report's core claims are well-supported, although it overstates the strength of some of the evidence. [More]
Cross-posted from my website.
Introduction
This article serves two purposes: First, it analyzes the evidence on protest outcomes. Second, it critically reviews the Social Change Lab literature review.
Social Change Lab is not the only group that has reviewed protest effectiveness. I was able to find four literature reviews:
1. Animal Charity Evaluators (2018), Protest Intervention Report.
2. Orazani et al. (2021), Social movement strategy (nonviolent vs. violent) and the garnering of third-party support: A meta-analysis.
3. Social Change Lab – Ozden & Glover (2022), Literature Review: Protest Outcomes.
4. Shuman et al. (2024), When Are Social Protests Effective?
The Animal Charity Evaluators review did not include many studies, and did not cite any natural experiments (only one had been published as of 2018).
Orazani et al. (2021)[3] is a nice meta-analysis—it finds that when you show people news articles about nonviolent protests, they are more likely to express support for the protesters' cause. But what people say in a lab setting mig
Hi Lauren!
Thank you for another excellent post! I’m becoming a big fan of the Substack and have been recommending it.
Quick question you may have come across in the literature, but I didn’t see it in your article: Not all peacekeeping missions are UN missions; there are also missions from ECOWAS, the AU, EU, and NATO.
Is the data you presented exclusively true for UN missions, or does it apply to other peacekeeping operations as well?
I’d be curious to know, since those institutions seem more flexible and less entangled in geopolitical conflicts than the UN. However, I can imagine they may not be seen as neutral as the UN and therefore may be less effective.
I haven't seen a lot of evidence on other kinds of peacekeepers, so I don't know that I can say with confidence how effective they are! I would guess it depends on how much they are seen as a neutral third party.