If 3.5% of Us Protest, We Win

tl;dr: Research shows that when 3.5% of a population engages in sustained nonviolent protest, they have always succeeded. The No Kings movement hit 5 million in June and as many as 7 million in October. We need 11.9 million this Saturday. Find your local protest and get out there.

As a data guy, I like numbers. I like when things can be quantified, measured, and tested. Right now, as many of us are feeling increasingly frustrated with the erosion of checks and balances in our democracy, I went looking for data on what actually works to fix it.

This Saturday, March 28th, San Diego is hosting the No Kings protest at Waterfront Park as part of a nationwide day of action. You might be wondering: Does standing outside with a clever cardboard sign actually accomplish anything?

The short answer is yes. But the long answer is where the math gets really interesting.

The Science of Showing Up

Harvard political scientist Erica Chenoweth and researcher Maria J. Stephan spent years analyzing hundreds of political campaigns over a century. Their book Why Civil Resistance Works found two massive takeaways:

1. Nonviolent campaigns are twice as successful as violent ones — 53% success rate versus 26%. Not even close.
2. The 3.5% Rule: No government has withstood a nonviolent challenge when 3.5% of the population actively and sustainably participates. Not one. Ever.

Why? Because nonviolent protests have a lower barrier to entry, meaning they attract way more people. Your grandma can march. Your kid can march. The guy who just doesn’t want to get arrested can march. And when you get that many bodies in the street, you disrupt the status quo, force economic and political costs, and ultimately trigger defections from the establishment.

Now, a quick caveat because I’m a data guy, not a cheerleader: Chenoweth herself has noted that 3.5% is an observed ceiling, not a magic threshold — most successful movements actually got the job done with fewer people. That’s arguably even more encouraging. It means every single person who shows up moves the needle.

The Math for Saturday

Let’s run the numbers for the US. We have a population of roughly 340 million.

340,000,000 x 0.035 = 11.9 million people.

That is our tipping point. If 11.9 million Americans show up and sustain the effort, historical data says we’re in the range where movements have always succeeded.

So where are we? According to Axios, the nationwide No Kings protests brought out an estimated 5 million people last June. By October, organizers reported as many as 7 million, though independent crowd estimates put the figure closer to 5-6.5 million. Even taking the conservative end, the trajectory is undeniable: the movement is growing.

We are sitting at roughly 1.5-2% of the population. We just need to close that gap. We need about 5 million more people off the couch and into the streets to hit that empirical threshold.

If you’re tired of doom-scrolling through the news and feeling helpless, this is the data-driven antidote. The math says your presence literally counts.

This Isn’t Wishful Thinking

I know what some of you are thinking: “That’s a cute stat from a Harvard professor, but does it really apply to the modern United States?”

Fair question. Here’s the thing — the Chenoweth dataset includes movements against some of the most entrenched regimes in modern history: the Philippines under Marcos, Serbia under Milosevic, Poland under the Soviet bloc. These weren’t soft targets. They were authoritarian governments with militaries, secret police, and state-controlled media. And in every single case where sustained nonviolent protest hit that 3.5% mark, the regime gave way.

The US still has free elections, a (battered but standing) court system, and a free-ish press. If 3.5% worked against actual authoritarian regimes, it can work here. We are not powerless. We are just not yet at critical mass.

Go

Time magazine is reporting that Saturday’s protest could be the largest yet. San Diego alone has 22 protest sites across the county, so if Waterfront Park isn’t your scene, there’s likely one within a short drive.

Bring water. Bring sunscreen. Bring that clever cardboard sign. Bring your neighbor who’s been complaining about the news but hasn’t done anything about it yet. Every single body counts — not as a metaphor, but as a data point.

I’ll see you at Waterfront Park this Saturday. Or maybe at one of the other 21 locations around the county. Either way, I’ll be the guy muttering about sample sizes.

Let’s go hit 3.5%.

Reference Links

The 3.5% Rule and Nonviolent Resistance:

• Chenoweth & Stephan, Why Civil Resistance Works: Amazon
• Harvard Kennedy School overview: The 3.5% Rule
• Commons Library summary: Chenoweth 3.5% Rule
• Erica Chenoweth’s TEDx talk: YouTube

No Kings Protest Attendance:

• Axios, June 2025 protests: 5 million turnout
• Axios, October 2025 protests: Turnout figures
• G. Elliott Morris, independent crowd estimate: 5.0-6.5 million
• Democracy Now: June protest coverage

March 28, 2026 Protests:

• Official No Kings site: nokings.org
• Time: Forecast to be biggest anti-Trump protest yet
• OB Rag: 22 San Diego County protest sites
• Axios San Diego: Waterfront Park details

Population Data:

• U.S. Census Bureau: Population Clock