Dozens of cities across the country are imposing curfews. Do they work?

“It is unclear whether ordering emergency curfews — that is, telling people they must stay at home and avoid public areas after a certain time in the evening, and increasing public police presence to enforce it — is effective in reducing unrest. Criminologists note there doesn’t appear to be an abundance of research on the matter. But some experts have raised concerns about the way curfews are likely to be enforced in communities of color and argue they could exacerbate the very dynamics that gave rise to the unrest in the first place: namely, that they will encourage confrontational policing at a time when people are demanding the opposite.”

““Curfews are an extremely blunt tool that should only be used sparingly and as a last result. They give police tremendous power to intervene in the lives of all citizens,” he said. “They pose a huge burden on people who work irregular hours, especially people of color in service professions who may need to travel through areas of social disturbance in order to get to and from work at night.””

How violent protests against police brutality in the ’60s and ’90s changed public opinion

“empirical research has come out persuasively showing that riots in the past have not generally swung public opinion toward the causes they’re rooted in.

Particularly with the 1960s riots, the evidence suggests that white voters’ negative reactions to these uprisings in black communities fueled the rise of “tough on crime” politicians whose policies perpetuated some of the problems that protesters in the ’60s stood against and that demonstrators today are now protesting.
We don’t know if this research on the 1960s uprisings can be perfectly generalized to protests today, when the circumstances, political climate, and population are different. There are other studies suggesting that, at least in limited circumstances, riots have helped some causes.

But there are concerning signs about the way today’s protests are going. With violence becoming a bigger and bigger part of the news, figures like President Donald Trump can ignore the overall message and cause of the protests and instead focus on calling for “law and order” and the deployment of the National Guard. Some, like Sen. Tom Cotton (R-AR), have called for military deployment in cities hit by riots. Unrest at protests is producing the very attitudes and positions — from “tough on crime” to the literal militarization of policing — that protesters are standing against.”

“research from the past suggests the path to meaningful change, particularly for racial justice, is typically more successful through peaceful means.”