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 The Holocaust helped formed Israel from Jewish people and it will help stop future acts of hatred before they can even start.
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Because Israel has stopped acts of hatred. Definitely.

[quote=Rare] and it ended discrimination against African Americans and helped the Hispanics out as well.
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And discrimination against Africans and Hispanics has ended as well, of course.

.[quote=Rare]
Well there are benefits to bad and good things that has happened from thousands of years. Like from example, World War 2 got major countries (America, England, etc) out of the Great Depression. 
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And into serious depression with debt.