CHICAGO — Dozens of people were arrested Tuesday as they participated in protests nationwide for a $15 per hour minimum wage.

Fast-food restaurant workers and home and child-care workers rallied in cities including Chicago, Detroit, Houston, Los Angeles, Minneapolis and New York. In many cities the protesters blocked busy intersections.

In Chicago, hundreds of protesters at O’Hare International Airport chanted outside terminals: “What do we want? $15! When do we want it? Now!”