Equating liberalism with communism and Marxism, is like equating Christian-Conservatism with libertarianism. Why, because Marxism and liberalism, are very different, but both on the Left. Libertarianism and Christian-Conservatism, very different, but both on the Right. Better comparisons here would be to compare liberalism and libertarianism, because they are both about liberty and the individual. But go about in different ways. Liberals, want to use a limited government to help create a society where everyone can thrive. Through things like education and infrastructure. Libertarians, practically see any government as a form of big government.
Marxism and Christian-Conservatism, are both different. For one, Marxists don't believe in any religion and religion would either be illegal, or under strict controls in a Marxist State. But they're both fascist in the sense that they both believe in their views and values so much that they believe any opposition would just be dangerous for society and shouldn't be tolerated. To go against a Marxist or Christian Theocratic State, should be subjected to death. Not that different if at all from Saudi Arabia and Iran.
So if you're on the Right and lets with the Tea Party, or way over on the Right and believe America should all get into a national time machine and go back to 1915 or something and Modern America looks more alien to you than Latinos, or women not only voting, but working, if you're going to equate Marxists with Liberals, look out for yourself being compared with Theocrats and even Islamists. Who believe individualism is dangerous and freedom to assemble, protest, form oppositions, are immoral and everything else. That people being free to be themselves and live their own lives is as immoral as raping a kid or something. In a fascist's mind.
Marxists, are fascists who are so full of themselves who kiss the mirror every time they're in the bathroom. Who thinks anyone who disagrees with them should be shot or something. Liberals, believe in free speech. After all we created it, along with the U.S. Constitution. And we believe in liberty and individualism, which are the opposites of Marxists. Who believe they know best how everyone should live and think and that it is the job of government to take care of everyone for everyone. But Marxist superstate and a theocratic superstate, are very similar in the sense that they see individualism as dangerous. Which is why they both believe in big government so much.