Political cartoons are significant in communication as they provide a way to convey complex political ideas and sentiments through visual satire. They often highlight current events, social issues, or political figures, encouraging public engagement and discussion. By simplifying intricate topics and employing humor, political cartoons can make important messages more accessible to a broader audience, thus fostering political awareness and critique. Additionally, they serve as a historical record of public opinion and societal attitudes, making them valuable tools for understanding political culture over time.