For me, it started even before Waco and Ruby Ridge.

Here's our good friend Joe Biden on Waco-

 But, I believe, it is important that these hearings serve a second goal as well, and that is, to put the incident at Waco, with all the mistakes that were made, into its proper context. 

 Let me make this point absolutely clear: There is no place in our country for racist cops like Mark Fuhrman. There is no place in our country for abusive cops. There is no place in our country for law enforcement bent on the use of unjustified force. 

 But there is a big difference between mistakes and malevolence. The record of the Waco incident documents mistakes — mistakes in gathering intelligence and mistakes in planning and executing operational plans. And law enforcement should and must be held accountable for such mistakes. 

 What the record from Waco does not evidence, however, is any improper motive or intent on the part of law enforcement. 

 I believe this is a very important point to make to the American public because there are a growing number of people across the country who are seizing on the incidents at Waco as well as at Ruby Ridge to suggest that law enforcement is our enemy. 

https://archive.org/stream/AftermathOfWacoChangesInFederalLawEnforcement/Aftermath%20of%20Waco%20-%20Changes%20in%20Federal%20Law%20Enforcement_djvu.txt

Ditto. I was a 'truther' from about 6PM local on that day. In the morning I got a phone call telling me about 'some crazy shit in new york with a plane crash,' my response was that "either this was a response for military action in the middle east, or, if they have a suspect before the dust settles it's because they did it to themselves." Then hung up and fell back asleep, woke up about an hour later and see NYC on every channel, it took a few minutes for it all to sink in.

6PM was about the time I first saw Bin Laden as the "mastermind". I had all the evidence I needed at that point, and all evidence after that supported that position. In spite of the debunkers...