In short- a house fire forced the parents out of the house. They were unable to reach the child due to the flames so they ran outside and called 911. After the firefighters arrived, the father tried to reenter the house through another entrance, but was forcibly stopped by the police present after the firefighters determined the house too dangerous to enter. The 3 year old was later found dead near the front door.
A big argument here, of course, is that civilians need to be isolated as much as possible from fires as to not interfere with the firefighters. There are many stories of homeowners attempting to help firefighters, but in fact worsen the situation due to their inexperience in firefighting and lack of knowledge of how fires behave.
However, the firefighters determined that the house was too hot and dangerous to enter to attempt a rescue. I see no justification for stopping the father from re-entering his home. Obviously, though, this is a very emotional issue: a father is watching his child die due to the fire and is willing to do anything to save him and he might not be in the rational state of mind in making the right call- he's in his pajamas and firefighters in full gear won't enter. But again, he is the father and should have the right to make that decision. This reminds me of a quote from an essay by the philosopher John Stuart Mill:
"That the only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others. His own good, either physical or moral, is not sufficient warrant. He cannot rightfully be compelled to do or forbear because it will be better for him to do so, because it will make him happier, because, in the opinion of others, to do so would be wise, or even right... The only part of the conduct of anyone, for which he is amenable to society, is that which concerns others. In the part which merely concerns himself, his independence is, of right, absolute. Over himself, over his own body and mind, the individual is sovereign."
I can appreciate restricting someone from interfering with the job you ARE doing, nut there's no justification for interfering with someone doing the job you're NOT doing. The man should have had every right to re-enter his home and bear the consequences of his decision, as an adult, whether it be serious injury or death. The law enforcement officers on site should be held accountable for their actions. Either way, I'm sure they would have faced litigation, either for letting the father go in and die or stopping him. But with what happened, they must be judged.