This exhibition, which explores how the Western helped redefine American film aesthetics, is the first in a series that covers world film history through billboard posters.

Whereas “wanted” posters along the western frontier might have been limited to certain geographic regions, the Internet can spread news around the globe at the push of a button.

The trial for anti-abortion activist Flip Benham, who is accused of distributing "wanted" posters that target doctors who perform abortions, begins Monday. Some consider the posters a First ...