Some say fake planes, but why would they do that when it would be much easier to just remote control them?
Anyways, talking about 911, there is one smoking gun which is the collapse of wtc7, in freefall speed. There is no other explanation than controlled collapse with explosive. This is the nr.1,2,3… subject 911 should be focues on and tell others. NO other subject is better to tell people to open their eyes. It´s an undeniable proof.
Tell people aboiut it and point them to this documentary, which goes into the wtc7 freefall-speed collapse.