The UFOTVstudios youtube channel has a playlist of lectures on expolitics from the 2010 X-Conference. Exopolitics is the study of the politics of the UFO phenomena and of extraterrestrial entities. Exopolitics involves discussions of the reasons for government secrecy on these subjects and the political consequences of full disclosure of information about them by the government.
Below are some videos that I liked. There are additional interesting videos on the playlist which you might enjoy watching, but there are also some videos there which I believe contain unreliable information ... so view them at your own risk.
The X-Conference : The Stephenville TX UFO Wave - Angelia Joiner
The X-Conference : UFOs and the National Security State - Richard Dolan
(The second video below is from a different channel and playlist but I am including it here because it is also by Richard Dolan and I preferred it to the first video below from the X-Conference.)
PA MUFON Conference 10/09/2009 Richard Dolan
Debunking the UFO Debunkers - Stanton Friedman
The X-Conference : SURGICAL REMOVAL OF ALIEN IMPLANTS - Special Update - Dr. Roger Leir
The X-Conference : A New World Power Emerges for UFO Disclosure - A.J. Gevaerd
The X-Conference : The Government, UFOs & Crop Circles - Colin Andrews
The X-Conference : Plan C: Preparing for ET Disclosure - C. B. Jones, PhD