There it is. That is real lumber those people are carrying, measured and pre-cut for the purpose of the thing they intend to construct. They brought real hardware with them and the tools to put it together. And they brought a real rope with which to really hang real people.
It is extremely important that we remember, this was real, this really happened. And there is no reason to believe that this is not going to happen again.
Do not listen to anyone who tells you this was not real. Do not listen to anyone who tells you this can't happen again. And do not forget this happened.