"Were the federal forces duly acting on a proper search warrant for whatever cause? If so, the idiots died because they were, well, idiots. If not, the government is at fault and someone needs some life sentences. It really is that simple. If the cops come knocking on your door with a search warrant to take your illegally obtained weapons and you fire on them, they have every right to fire back and kill you if necessary."
Wow, a lot of crap to unpack here:
1) It's not even certain that there was a warrant to be served; the ATF refuses to say who was carrying it on the day of the February 28th raid. The warrant that eventually came to light dealt primarily with the allegations of child abuse, which is not a federal crime, is not something the ATF would handle if it were, and was investigated by local authorities and found to be without merit.
2) The warrant was defective even if it had been properly served, as the ATF agents that wrote it up perjured themselves when claiming that the BDs had been operating a meth lab - completely without evidence - in order to get military training and equipment for the assault.
3) The ATF started firing before the warrant was served - their assault plan called for killing the BDs' dogs straightaway with gunfire, which I believe was what precipitated the gun battle.
4) The curious thing is that the warrant wasn't even necessary; David Koresh repeatedly extended invitations to the ATF to come and examine his inventory any time they liked without notice. The ATF refused to take him up on the offer, instead opting for their dramatic and headline grabbing military assault (code-named "Operation Showtime").
5) It is legal to resist the police when they are breaking the law and/or using unnecessary/excessive force (especially in Texas). Several of the survivors of the massacre were put on trial for murdering federal agents. They were all acquitted on the grounds of self-defense (the jury forewoman even said afterwards that they felt "the wrong people were on trial here"). Leaving aside the defects in the warrant (which by themselves made the whole raid illegal), is it really reasonable to go to someone's house with nearly a hundred storm troopers, guns blazing, supported by helicopter gunships to enforce some minor gun regulations when the alleged violator had repeatedly expressed his willingness to cooperate with the authorities?
6) No one (even the government) has ever alleged that the Branch Davidians had obtained their weapons illegally. The question was whether the paperwork for the weapons was in order and there was a suspicion (completely devoid of evidence) that some weapons had been illegally converted to fully automatic without the proper government license/tax being paid.
Draug, please do yourself a favor and watch the documentary I linked to. Most of these very questions are asked and answered there.