A Political Cartoon is a drawing or image, that is based on the artist's opinions.
So, if you drew a person, wearing a mask, with a speech bubble saying "This sucks!" what would the first thing you would think about? That wearing a mask sucks.
So, in order to analyze your own Political Cartoon, you have to find the overall idea of why the Cartoon (Image or drawing) was made.
I hope that this helps you. :) <3