Hello. You did not show the cartoon to which the question refers, which makes it impossible for it to be answered accurately, but I will help you in the best possible way.
When an artist does a political cartoon, he is trying to make the public realize an adverse situation that is happening in politics in a critical and punctual way. Political cartoons generally present political issues in a satirical and ironic way, but they can also expose these issues in a literal and serious way.