You have your opinion, and are welcome to it. I think perhaps you should consider, though
(1) What the 2nd amendment means, and
(2) That the "good guys" in this case broke numerous laws. These would include perjury, assault with intent to kill, theft, burglary, murder ("David Koresh"'s daughter was shot in his arms at the beginning of the shooting.), obstruction of justice, criminal trespass...is that enough for you?
To everyone else, I apologize, as the usage of crime should not be considered a part of tactics. There was a series of articles SOF did on this, with a high proportion of the information coming from the trials of the surviving Davidians...