Street urchin schoolhouse fight, circa 1902. Unless he knows some wicked judo move, I say the kid on the right is about to get clocked.
Nearly all of these urchins were discovered in the photography archives of the Library of Congress (and available without copyright restrictions online). Otherwise, urchin photos will be credited to the appropriate photographer with a link to its source (unless they come from my own collection of photographs from unknown photographers). If there is ever a copyright concern, do not hesitate to contact me.