I don't know if it's fair to say news organizations are using the bombing to gain financially. They are doing their jobs -- which is, providing a service to gather and disseminate news. In order to do that service, reporters and editors need to be paid.

You could look at another way: If the service didn't exist, many people would likely not know the news, or the extent of it -- and so might not be compelled to donate or otherwise help out.