Equate being liberal with being a socialist.
While most liberals are all for using elements of socialism where it makes sense, there are very few who would like to see all private industry seized by the government. The reality is that most liberals believe wholeheartedly in a system based on free-market principles and are therefore capitalists. So when you call Obama a “socialist,” what you’re really saying is that you need to go back to college and learn your isms. Last time I checked, GM didn’t stand for Government Motors.