Canada

What's done is done, we can't unwind the past. We can help them heal, and try to grow past the grief, but yes, those scars are never going to be gone. Every tragedy like this is a failure. Of what, and how can take time to put together. Everyone is going to want to latch on to any one of a million factors and invent a story in their mind of what happened that fits their perspective on the world. I would advise against that, because none of us know all the details yet, and we may not for some time. Right now, it's important to mourn the lost, to comfort those closest to them, and let those tasked with putting the facts together do their job.