My theory about the Branch Davidians is that they were targeted individuals. Someone who was targeted back then without the kind of knowledge T.I.'s have today might have assumed all the strange experiences - legions of people harassing them, mysterious voices in the head - were the work of the Devil, and that the End Times were near.
Once they gave the feds the excuse they needed to go after them - buying guns, moving into a compound - it was easy to paint them as dangerous extremists and justify exterminating them. Plus, getting prime-time coverage of a heavily armed "cult" helps push the anti-gun agenda.