This is absolutely true. I consider myself to be a moderate, but I've seen a significant number of my formerly self-identified liberal friends swing rightward, and it's largely because the repressive totalitarian mindsets they loathed during their formative political years - Bush II - are now reappearing on the left.
The right does it in the name of security and patriotism, the left does it in the name of justice and equality. And the ends always justify the means.