Reporting too much?

I’m fairly fanatic about transparency in news and government: They should share what they know when they know it. But when it comes to security and terrorism, of course, the rules are different. And I think ABC probably went over the line when it aired pictures of the London terrorists’ bombs and the damage they caused over the strong objections of British authorities. What was the public good that was served? How was seeing the bombs more important than catching the bombers?