I don't think I know what it means, but I have some idea, so I am going to take a stab.
There are patterns of influence that continually reinforce a particular picture of things. Truth is a clearing away, exposing something that was hidden. Something important. Valuable change can occur when unhealthy patterns are recognized for what they are by the folks in power.
So when do certain wealthy senators, former presidents, and high profile lawyers recognize their unhealthy patterns?
They mean that truth will set us free from George Bush's evil power...
truth supposedly has magic ability to bring down corrupted powers... that is what they mean.
of course, justly derived powers, are strengthened by truth...
that is their great self deception....
they think they have a truth that will bring down the current administration.
at times, I really wonder how mentally ill they actually are.