[AnAmericanAbroad]

Holy crap.

That’s gotta be the biggest mass shooting I’ve ever heard of (in terms of number of victims in one incident).

Damn.

[Azzurri]

That’s gotta be the biggest mass shooting I’ve ever heard of (in terms of number of victims in one incident).

Looks like it very well may be:
List of Rampage Killers (wiki)

[Jack Hydrazine]

You forget about Beslan brought to you by the RoP!

[TexasFreeper2009]

Such unique circumstances... he dressed as a police man and yelled for everyone to come to him... they were also trapped on an island with the water litterally to their back.

it was a perfect storm for the shooter :(

[PROTESTBYPROXY]

The police sat by and let the slaughter happen because they were afraid of explosives. Proud to Be and American! And home of the brave!!!!!

[CodeToad]

“That’s gotta be the biggest mass shooting I’ve ever heard of (in terms of number of victims in one incident).”

Waco, Texas: The US government killed at least 74 people, vurned them alive and shot the survivors trying to flee.