That's quite a bit more complicated than just another suicide cult. From your link:
> Increasingly aggressive techniques were used to try to force the Branch Davidians out. For instance, sleep deprivation of the inhabitants through all-night broadcasts of recordings of jet planes, pop music, chanting, and the screams of rabbits being slaughtered. Outside the compound, nine Bradley Fighting Vehicles carrying M651 CS tear gas grenades and Ferret rounds and five M728 Combat Engineer Vehicles obtained from the U.S. Army began patrolling. The armored vehicles were used to destroy perimeter fencing and outbuildings and crush cars belonging to the Branch Davidians. Armored vehicles repeatedly drove over the grave of Branch Davidian Peter Gent despite protests by the Branch Davidians and the negotiators.
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> Criticism was later leveled by Schneider's attorney, Jack Zimmerman, at the tactic of using sleep-and-peace-disrupting sound against the Branch Davidians: "The point was this—they were trying to have sleep disturbance and they were trying to take someone that they viewed as unstable to start with, and they were trying to drive him crazy. And then they got mad 'cos he does something that they think is irrational!"
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> At around noon, three fires broke out almost simultaneously in different parts of the building and spread quickly; footage of the blaze was broadcast live by television crews. The government maintains the fires were deliberately started by the Branch Davidians. Some Branch Davidian survivors maintain that the fires were accidentally or deliberately started by the assault.