Best way to kill a ton of people?

[CountDeMoney]

Lock all the theater doors and get Great White to play.

[Razgovory]

Every shrink I've seen has told me this really isn't a productive area of discussion.

[mongers]

That's what 5 Americans, 7 Brits or 12 Europeans ?

Asking the first two groups to run for a taxi, should just about do it. 

[CountDeMoney]

Naw, I work for the government and we talk about this shit all the time in disaster recovery, emergency management and etc meetings where we go over a long list of implausible scenarios and how we'd respond to them.

Yeah, we did the same stuff with EM and DR.  Actually had someone try to figure out how much TNT would be needed to bring down the corporate HQ.
Although, it's interesting to see how the concentration has shrunk from mass casualty events to cyber-events over the last 10 years.  The last massive DR/Business Continuity tabletop I attended was all 100% cyber.

Hospitals still do the mass casualty event stuff all the time;  hell, I remember the one mass casualty exercise I was involved in way back in '94:  what would happen if a commercial plane in the ATC pattern to BWI crashes into Camden Yards on game night?  ITS GONNA NEED A SHITLOAD OF SCREEN DOORS

(In theory, the actual response would be ineptitude and stupidity regardless of whatever plan we spend 60 man hours talking about and 300 man hours designing.)

Ahhhhhhhhhhyup.  Assholes and elbows.

[Alcibiades]

Attacks at sporting events would probably be the worst for a lot of reasons.   

[mongers]

Attacks at sporting events would probably be the worst for a lot of reasons.   

Yeah, those reschedules games would play hell with the end of season title race.

[Syt]

Attacks at sporting events would probably be the worst for a lot of reasons.   

Not least because of the movies it would inspire:

[jimmy olsen]

Non-mainstream idea: Spread disinformation that common childhood vaccines are harmful. I wonder how many people have already died to that foolishness? And I don't know that it even involved a true criminal act (maybe a civil suit, though?)

1024

antivaccinebodycount.com

[jimmy olsen]

Hospitals still do the mass casualty event stuff all the time;  hell, I remember the one mass casualty exercise I was involved in way back in '94:  what would happen if a commercial plane in the ATC pattern to BWI crashes into Camden Yards on game night?  ITS GONNA NEED A SHITLOAD OF SCREEN DOORS

That flight coming in from Warsaw?

[The Brain]

Well placed explosives on a dam with populated areas downriver.

No, you're confusing things. It's nuclear power that is extremely dangerous to the public. Not hydro. Hydro is safe.

[Admiral Yi]

Every time I drive on a crowded interstate I think about the havoc one could cause with a sudden turn of the steering wheel.

[Razgovory]

Every time I drive on a crowded interstate I think about the havoc one could cause with a sudden turn of the steering wheel.

Those aren't good thoughts to have.

[Josquius]

 Car bombs are pretty easy to build. I know a guy who back in pre-11/9 days for an experiment made one out of an old wreck (safely detonated miles from civilization).

How about messing with train tracks to cause a derailment?
Works for partisans. Never heard of terrorists/general purpose psychos trying it though.

[jimmy olsen]

Well placed explosives on a dam with populated areas downriver.

That hardly sounds easy though. How are you going to do that without getting caught?

[Caliga]

Car bombs are pretty easy to build. I know a guy who back in pre-11/9 days for an experiment made one out of an old wreck (safely detonated miles from civilization).

When I was a kid we used to experiment with pipe bombs.  Usually we would blow up stumps out in the woods.  One time, one of my friends was hammering a pipe bomb shut and it detonated in his face, which meant that he ended up with a glass eye.  That ended the pipe bomb experimentation for all of us.