I'm getting deja vu about feeling deja vu, aren't you?

I'm Darrow Brown, and we have breaking news out of Las Vegas where there is an active shooting scene on the Las Vegas strip.

According to Las Vegas, PD, we do have reports now that two people are dead.

In the first couple of news cycles, we saw the same arc of coverage we've seen before,

the same unnamed law enforcement sources with the same speculations.

And we've also made the same observations about it many, many times before.

It's believed that whoever this gunman is, a man in his 50s who is carrying three weapons,

a handgun, a shotgun, and an assault rifle.

Wrong about his age, wrong about the assault rifle.

Earlier today, some media outlets were tweeting out that the shooter was a man named

Raleigh Chance.

Now that is dangerously wrong. That was from our coverage of the

coverage of mass murder at the Washington Navy Yard, where a lone gunman fatally shot 12 and wounded

eight back in September 2013. In fact, that mass shooting inspired the first in what has since become a series of

breaking news consumers' handbooks, single sheets of bullet points that identify the usual

mistakes and narrative biases that mar the coverage of all kinds of recurring events,

ranging from mass shootings to plane crashes,

to hurricanes, to epidemics, to elections, to coups. But it seems that the first one on mass

shootings made the biggest impression, because it's reached millions of people and been translated

into a heap of languages.

Of course, with each new abomination, we can tweak and refine those bullet points,

and the time seemed ripe, because this was, after all.

...