U.S. Gov't Involvement in the 9/11 Attacks?

I hesitate to categorically state that elements of the U.S. government actively engaged in the planning/execution of the 9/11 attacks. Ten years ago, as I watched and wept, I did not immediately connect the Muslim terrorists with  the Machiavellian political machinations in Washington.

Since that time, however, many anomalies have come to light -- anomalies which the political and media establishments have deliberately covered up. It makes me wonder what they are trying to hide.

I've watched some long videos that pile up evidence against the truthfulness of the official story. Here are a couple of short ones that do a good job of revealing the chasm between the establishment version and what seems to have really happened.

The first video contains one doo-doo word near the end.