The Boston bomb explosions, although small by bomb standards, received world wide media coverage, no doubt because it was during a sporting event and, well, Americans are a bit like us, aren't they. Cameras being close by and footage being able to go to air quickly has quite a bit to do with it.
Bombs go off in awful places all the time and they barely rate a mention. The dead, dying and injured are quickly cleared away, streets are cleaned and things put back where they were and a few hours later, no one would know anything happened.
In western countries, of course there must be a thorough investigation, which often takes days and generates its own publicity and the pursuit of the guilty persons becomes world wide news......exactly what those who planted the bomb wanted, publicity for their cause. Of course the matter should be reported by media. We have a right to know, but turning incidents into circuses for media needs to have lid put on it. I should think reporting it responsibly without cameras at the scene until the area is cleaned up might be a good start.
We were caught in a freeway traffic jam in Thailand quite a few years ago. We were in coach and impatient as it inched forward. Suddenly the road cleared and we were away. With the help of a Thai speaker, I later learnt it had been a fatal accident and traffic was delayed for about an hour. The authorities race to the scene with the prime motives of removing the dead and injured and then clearing things away to get the freeway traffic moving.
Not so here in Melbourne. A fatality would probably guarantee a six hour freeway closure. You only have to look at the truck that partially crashed through a freeway barrier a month or two ago. The driver was thrown clear, so there was no need to worry about anyone's safety, apart from those removing the truck. It took all day to remove one truck from a freeway. The best that can be said for the effort was that the authorities did get to play with their new flying drone to 'check things out'.
There must be a middle path somewhere. Yes, crashes need to be investigated and safety must be a priority, but I suspect clearing such things up is taking a lot longer than it ought to. A lot of people have a vested interest in the delay being as long as possible and re-opening a closed road is not a high priority.