"street force" is a correct and usable expression in written English.
Street force can be used to refer to a police or military force charged with keeping order or patrolling a certain area or street. For example: "The city's street force has kept the streets safe during the protests."
Hezbollah clearly hoped that its show of street force would translate into an enhanced power in the political stalemate that has crippled Lebanon for 17 months now.
The Islamists' strong performance in both cities and villages represents a challenge to the largely secular middle-class protest movement that spearheaded Egypt's revolution and felt empowered by its show of street force.
By the end of 1967, Fass's listeners were a street force, celebrated by Abbie Hoffman, who spoke on "Radio Unnameable" about the magic that might result if acidheads and political activists joined together.
The Occupy Wall Street forces focus more on income than on wealth.
"He is extremely pugnacious, and he controls a lot of the street forces.
The Occupy Wall Street forces then directed their skills at the church: They took their arguments to the streets.
The platforms were in the middle of the street, forcing the cars to go on either side.
You can't be faulted if you believed that the Occupy Wall Street forces would be back in earnest.
These would be available only in government stores on the high street, forcing people to travel into town.
That led to debacles such as the 2012 budget, when a lack of political judgment in Downing Street forced you to reverse several policies.
The price battle among the big supermarkets has spilled over on to the high street, forcing other retailers to slash prices and squeeze profit margins.
