The most gruesome crime in the 1800 was the massacre of 100 million Native American Indians who were shot cut in half with swords and had their scalps cut from their heads and they were burned alive or skinned alive or they were shot and Torrured by the us Calvery

4 billion people are killed very slowly by the super rich . The true criminals of our planet

As I read some of the comments I asked myself what kind of morons and ignorants live around me. Cheers for freedom of speech.

Sandy hook was real and terrorist caused 911. The government isn't behind any of it. Anyone who belives the government was behind these crimes is an idiot.

Middle Passage Slavery kidnapped and killed some 18 million human-being, devastated families, and orphaned untold thousands of innocent children. None of the crimes mentioned here are even close on scale or impact. Middle Passage Slavery is easily the Worst Crime in History.

Why wasn't Billy the kid in here I mean he was one of America's worst criminals

So I sitting here reading the comments and I keep on running into Zach. Why do I feel that you don't know what your talking about.

I think that all of the crimes you mentioned are devastating and i am pretty sure that most people agree. It irritates me that people are so dumb to the fact that they think it's OK. It doesn't matter if its the government or an organization or whatever. It isn't completely about who did it but why they did it. May god bless America and all countries that go through tragedies like these.

The senseless shooting and murder of John Lennon, one of the foremost artists of the time. Not only was a life taken but the world lost much more.

OMG this article was so sad i almost cried...........GODDY!!!