Dennis Prager provided an excellent explanation of the very important differences between the Left and Liberals here:
People typically think the current polarization is a result of Liberals vs. Conservatives. This isn't the truth at all. Both Liberals and Conservatives want many of the same things, though they may disagree on the way they are achieved.
Liberals and Conservatives both support free enterprise and the capitalist system.
Liberals and Conservatives are both patriotic and want to protect America and its borders.
Liberals and Conservatives both strongly support free speech.
Liberals and Conservatives both celebrate the wonderful historical contributions of Western Civilization.
The Left does none of those things, in fact it is concerned with the business of destroying those particular institutions via lies and subversive societal manipulation.
Liberal values do not push the individual toward atheism and Marxism. That is the Left. The Left uses lies and propaganda to achieve their nefarious goals. That's why, despite all the economic improvements to the country, including more jobs for minorities, the Leftist American media's non-stop barrage on our senses is just one long character assassination of our president.
This passage does the best job of describing the Left:
"Ye are of your father the devil, and the
lusts of your father ye will do. He was a murderer from the beginning,
and abode not in the truth, because there is no truth in him. When he
speaketh a lie, he speaketh of his own: for he is a liar, and the father
of it." John 8:44