1. Look at the caption/s
2. Find what it is about
3. which group or groups is it based against?
Actual way to analyze a political cartoon:
1. Let your eyes "float" over the cartoon.
2. Follow the cartoon's natural flow by discovering the interaction with the primary focus.
3. Determine the audience.
4. Understand the context of the cartoon.
5. Look for widely recognized symbols
6. Look at minor details in the cartoon that will contribute to the humor or the point of the cartoon
http://www.wikihow.com/Analyze-Political-Cartoons
This political cartoon uncle Sam represents the Americans, the waiter is supposed to depict president McKinley. The waiter is "serving" the Americans what they want by giving them their choices of land. http://lydiahistory.blogspot.com/2014/01/political-cartoons-of-spanish-american.html
This cartoon depicts Uncle Sam in the Philippines with a man depicting Spain in the background. Uncle Sam is supposed to be helping out the little Philippine child and Spain is supposed to look as if it were a threat. http://www.globalresearch.ca/selling-empire-american-propaganda-and-war-in-the-philippines/5355055
This cartoon depicts what will happen if Americans allow Spain to have the territories. The cliff represents sure death and the man is pushing the little kid off. http://www.conservapedia.com/American_History_Homework_Nine
