Answer:
This political cartoon, "Under the Thumb," was published by Thomas Nast, the scourge of Tweed and the Tammany Hall Machine. In the cartoon, we see the Tweed has the city under his thumb, meaning he is in complete control. This cartoon depicts New York under the thumb of Tweed, who is the Boss there. Adding "Well, what are you going to do about it," supposedly a quote from Tweed himself, shows that he knows what he is doing, and knows that he can remove any threats he sees fit.
