Prager answers the question negatively here. He asserts that
In the hierarchy of leftist (as opposed to traditional liberal) values, truth is below other values, such as equality, opposition to war, the promotion of secularism and a number of other highly regarded values on the Left.
The column is worth reading. In addition to the numerous examples he offers, he could well have discussed the Left's willful lies regarding abortion.
Update 7/28/07 - The controversy generated over Rush Limbaugh and Bill O'Reilly by Media Matters illustrates well Dennis Prager's point. The Left smears by making blatantly false accusations in a desperate attempt to blunt the reputation and effectiveness of O'Reilly and Limbaugh. Later - Peter Wehner of the Ethics and Public Policy Center defends Rush Limbaugh against the Media Matters' smear saying:
The problem, of course, is that that the charge leveled against Limbaugh is obviously false . . . The Left in America clearly wants to take Limbaugh out, and for obvious reasons: he is a deeply influential conservative voice and during the last 20 years he has changed American politics and the American media in profound ways. The Left hates him — but they have found no way to stop him. Like the Mississippi, he just keeps rolling along. . . .
Juan Williams sets the record straight.