Lazy webmasters have been stealing images off the Internet since before Google Image search was invented. You need a generic picture of a guy in a lab coat, you just search "guy in lab coat" and grab the first one you see. Of course, if you don't take a few minutes to at least figure out who's in the image you just borrowed, this can lead to all sorts of unintentional hilarity and/or horror. Especially if you're using the image to make a political point.
4 A Christian Book About Traditional Families Accidentally Uses an Image from Modern Family
When looking for a good image to place on the front of his new book about the biblical way to raise children (which we're assuming involves making them wander around the desert), evangelical preacher Doug Sehorne did a quick Internet search and thought this one looked good:
Doug Sehorne via gawker.com
The cover took dozens upon dozens of man-seconds to design.