It's not just the US: left-wing parties suffer in many countries because their voters are heavily concentrated in urban areas.
This young activist believes that historic preservation shouldn't get in the way of making cities safer.
State and local officials in the US are faced with a lot of bad options, but they don't have to cut jobs and services.
Frustrated by the status quo, more and more young people are running for local government, where they believe they can effect progressive change.
The goal is to streamline operations, but it's not yet clear how local government would change.
Locking down a single city has proved to be no easy business in the UK, where city councils are relatively weak.