What opposition party?

Rove's Early Warning:

"What Democrats should have learned is that they cannot evade the security debate. They must challenge the terms under which Rove and Bush would conduct it. Imagine, for example, directly taking on that line about Sept. 11. Does having a 'post-9/11 worldview' mean allowing Bush to do absolutely anything he wants, any time he wants, without having to answer to the courts, Congress or the public? Most Americans -- including a lot of libertarian-leaning Republicans -- reject such an anti-constitutional view of presidential power. If Democrats aren't willing to take on this issue, what's the point of being an opposition party?"