From http://en.wikipedia.org/wiki/Newsboys_Strike_of_1899
The Newsboys Strike of 1899 was a youth-led campaign to force change in the way that Joseph Pulitzer's and William Randolph Hearst's newspapers compensated their child labor force. The strike lasted two weeks, causing Pulitzer's New York World to reduce its circulation from 360,000 to 125,000. The strike was successful in increasing the amount of money that newsboys received for their work.
Newspaper boys, also called 'newsboys' or 'newsies', were the main distributors of newspapers to the general public from the mid-19th to the early 20th century in the United States. Standing on street corners, walking through neighborhoods and hawking their papers throughout every city, they first appeared with the rise of mass circulation newspapers. Newsboys tended to be among the poorest classes of society, often seen sleeping on the streets. The newsboys were not employees of the newspapers but rather purchased the papers from the publishers and sold them as independent agents. Not allowed to return unsold papers, the newsboys typically earned around 30 cents a day and often worked until very late at night. Cries of "Extra, extra!" were often heard into the morning hours as newsboys attempted to hawk every last paper.