Not true.
David Koresh came to the door with a child in his arms and was fired upon immediately. The child was killed and he was wounded.
The Feds came in with guns blazing. They wanted headlines, and they got them.
The Branch Davidian "compound" should have been treated as a crime scene when the conflagration was over, but it wasn't so that the Feds could destroy all the evidence.
Furthermore, the Feds shot unarmed people trying to escape the flames on the final day.