Out of panic and ideology, President Bush squandered America’s position of moral and political leadership, swept aside international institutions and treaties, sullied America’s global image, and trampled on the constitutional pillars that have supported our democracy through the most terrifying and challenging times. These policies have fed the world’s anger and alienation and have not made any of us safer.

In the years since 9/11, we have seen American soldiers abuse, sexually humiliate, torment and murder prisoners in Afghanistan and Iraq. A few have been punished, but their leaders have never been called to account. We have seen mercenaries gun down Iraqi civilians with no fear of prosecution. We have seen the president, sworn to defend the Constitution, turn his powers on his own citizens, authorizing the intelligence agencies to spy on Americans, wiretapping phones and intercepting international e-mail messages without a warrant.

We have read accounts of how the government’s top lawyers huddled in secret after the attacks in New York and Washington and plotted ways to circumvent the Geneva Conventions — and both American and international law — to hold anyone the president chose indefinitely without charges or judicial review.

Those same lawyers then twisted other laws beyond recognition to allow Mr. Bush to turn intelligence agents into torturers, to force doctors to abdicate their professional oaths and responsibilities to prepare prisoners for abuse, and then to monitor the torment to make sure it didn’t go just a bit too far and actually kill them.

The White House used the fear of terrorism and the sense of national unity to ram laws through Congress that gave law-enforcement agencies far more power than they truly needed to respond to the threat — and at the same time fulfilled the imperial fantasies of Vice President Dick Cheney and others determined to use the tragedy of 9/11 to arrogate as much power as they could.