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The link you posted deals with a purported Darwin-Hitler link.

Here is a different take on the matter (from Index to Creationist Claims):

Adolf Hitler exploited the racist ideas of Darwinism to justify genocide.

Source:

Weston-Broome, Sharon. 2001. Louisiana House Concurrent Resolution no. 74: CIVIL RIGHTS: Provides relative to racism and education about racism. HLS 01-2652 ORIGINAL.

Response:

Hitler based his ideas not on Darwinism but on a "divine right" philosophy:

Thus, it [the folkish philosophy] by no means believes in an equality of races, but along with their difference it recognizes their higher or lesser value and feels itself obligated, through this knowledge, to promote the victory of the better and stronger, and demand the subordination of the inferior and weaker in accordance with the eternal will that dominates this universe. (Hitler 1943, 383)

The first edition of Mein Kampf suggests that Hitler may once have believed in a young earth: "this planet will, as it did thousands of years ago, move through the ether devoid of men" (p. 65; the second edition substitutes "millions" for "thousands," and chapter 11 refers to "hundreds of thousands of years" of life in another context.) Other passages further support his creationist leanings:
The undermining of the existence of human culture by the destruction of its bearer seems in the eyes of a folkish philosophy the most execrable crime. Anyone who dares to lay hands on the highest image of the Lord commits sacrilege against the benevolent Creator of this miracle and contributes to the expulsion from paradise. (Hitler 1943, 383)
and
What we must fight for is to safeguard the existence and reproduction of our race and our people, . . . so that our people may mature for the fulfillment of the mission allotted it by the creator of the universe. (Hitler 1943, 214)
Quotes from Hitler invoking Christianity as a basis for his actions could be multiplied ad nauseam. For example:
Hence today I believe that I am acting in accordance with the will of the Almighty Creator: by defending myself against the Jew, I am fighting for the work of the Lord (Hitler 1943, 65).
"[T]he task of preserving and advancing the highest humanity, given to this earth by the benevolence of the Almighty, seems a truly high mission (Hitler 1943, 398).
A campaign against the "godless movement" and an appeal for Catholic support were launched Wednesday by Chancellor Adolf Hitler's forces (Associated Press 1933).
Of course, this does not mean that Hitler's ideas were based on creationism any more than they were based on evolution. Hitler's ideas were a perversion of both religion and biology.
Genocide and racism existed long before Darwin. Obviously, they did not need any contribution from Darwinism. In many instances, such as the Crusades and the Spanish conquest of Central America, religion was explicitly invoked to justify them.
Evolution does not promote social Darwinism or racism or eugenics.

References:

Hitler, A. 1943. Mein Kampf. Transl. R. Manheim. Boston: Houghton Mifflin. http://www.stormfront.org/books/mein_kampf/ or http://www.crusader.net/texts/mk/
Associated Press. 1933. Hitler aims blow at 'Godless' move, Lansing State Journal (Michigan), Feb. 23, 1933. Reprinted at http://www.infidels.org/library/historical/unknown/hitler.html

Further Reading:

Toland, John. 1976. Adolf Hitler. Garden City, NY: Doubleday.

http://www.antievolution.org/people/wre/evc/argresp/hitler.faq and http://www.antievolution.org/people/wre/evc/argresp/hitler.add