Social critique is a type of academic or journalistic criticism that focuses on modern social concerns, particularly perceived injustices and power dynamics in general. Social critics use their skills as observers to identify problems within society and they often call out cultural trends that they believe are inappropriate or harmful. Social criticism can be found in all types of media and its purpose is to draw attention to issues that need to be changed or improved. Critics use different methods to get their points across such as essays, interviews, cartoons, poetry and more. Often, their work is controversial as it aims to provoke discussion about important social problems. Some famous social critics include Karl Marx, Friedrich Engels, John Stuart Mill, Simone de Beauvoir, Christopher Lasch, Michael Moore and Arundhati Roy. Marxism is a political ideology that focuses on class analysis as the way to understand and change society. It was developed by Karl Marx and Friedrich Engels who were both philosophers and economists. Marxism has had an influential role in many major social movements over the past century including feminism, anti-racism and environmental activism. Engels started writing articles for a German newspaper when he was just 23 years old.