An editorial cartoon, also known as a political cartoon, is an illustration or comic strip containing a political or social message. Editorial cartoons can usually be found on the editorial page of most newspapers, although a few, like Garry Trudeau's Doonesbury are sometimes found on the regular comics page. In recent years, many radical or minority issue editorial cartoonists who would previously have existed obscurely in the samizdat or not at all have found large audiences on the internet. While not carrying the same legitimacy as corporate newspaper cartoonists, self-editing online cartoonists who do not find themselves subject to the conservative constraints of the newspaper industry have often produced challenging, incisive and acerbic work with great visual innovation.