The vicious radical Islamists who did this, or who caused it to be done, or who want to do as much and more in the future.
The most negligent administration in U.S. history, the Clinton Administration. For Clinton, his entire eight years in office were nothing but one extended frat party.
The Clinton apologists in the Democrat Party and the media, all of whom knew of Clinton's negligence toward his job, but covered for him anyway.
Leftists in and out of elective office, who spent the better part of the last 35 years or so gutting our intelligence services, as well as spreading their multi-cultural, politically correct cancer throughout this nation, rendering it confused, muddled, and incapable of critical decisions necessary to protect its own people.
No, we must never forget or forgive. We must also act; must also be as brave as so many of those doomed people on those planes, in the Pentagon and in those towers were on that fateful day. The Leftist agenda must be rolled back. Our borders must be secured. Our young must be taught our history, heritage and Constitution honestly, without politically correct revisionism. Values such as personal honor, personal responsibility, and the ability to distinguish right from wrong must be rekindled in our land. The radical homosexual agenda must be defeated. We have much work to do, folks. Let's begin by defeating as many Democrats as possible this November.