What happened to WTC building 7?

All the fake politicians are out in force today (9-11-2013) to memorialize the date that the twin towers were struck by aircraft.  Between bowed heads, fake sobs and alligator tears they subtly promote more war as a mechanism to keep us all safe in the future. 

Before you buy into all of this theater and jingoism, please consider the single most important piece of data that you will ever hear about the events that went down on 09-11-2001:

• Three (3) buildings collapsed, not two.
• The 3rd building was known as WTC 7 and it was a large, 47 story building.  At 741 feet tall it would have been a prominent figure in the skylines of most US cities. 
• While the twin towers were clearly hit by aircraft of some sort, WTC 7 was not struck by anything except minor debris thrown from the twin towers. WTC 7 had only very minor fires as a result.

So what happened to WTC7?  What made that 47 story, steel frame building suddenly collapse into it's own footprint at the speed of gravity surrounded by a cloud of pyroclastic dust?  Why is it that expert after expert who does not work for the con men in government say that it looked like controlled demolition?  Why is it that witnesses on the ground are on record many times saying that the fire department knew in advance that the building would soon "blow up"?

Finally, why is the Army's ex-head of intelligence (Major General, Ret) effectively saying that it was an inside job?

Also consider: https://www.youtube.com/watch?v=BkPRskciqVM