Deadstreaming

Not only does (see above) shooting the shooter in the first few seconds cut down on the number of victims, the threat of being shot will strongly dissuade copy-cats because a livestream of a terrorist being taken out in 10 seconds and then dying painfully sends a very different message to a livestream where the terrorist can act with impunity for minutes. [More]

Look on my Works, ye Mighty, and desPOW!

[Via Michael G]