Well, the (perceived) permission to enter may have been a misunderstanding. With the information we have right now, it's impossible to tell what exactly happened. However, journalists who cover a crime scene and believe they have been granted access are unlikely to decline this option.

In that scenario I put more blame on the network who decided to air the footage. A lot of journalists and photographers take videos and images of horrific scenes, which networks and media outlets decide not to publish. The network had editorial control and made the decision to put the footage out there.