We know that the Swastika of India has been reversed by Nazis.
That they ended up creating Holocaust and were responsible for World War II could be because of this reversal of Swastika(which is considered very auspicious).
Please read ‘Sakthi and Saktha by Sir John Woodroffe which deals with Tantra Sastra.
‘Swastik (Swastika) in Hinduism and India – Swastik (Swastika) has been a symbol of good luck from time immemorial in Indian (Hindu) homes. Swastik (Swastika) can be seen drawn at doors, walls and many auspicious places in Hindu homes to signify good luck and well being. Swastik (Swastika) is also found even more prominently around many festivals and coming from a hindu family. …
Meaning of Swastik (Swastika) in Hinduism religion – Swastik, even if overall a symbol of good luck and well being, might mean different things in different sects/region/aspects of Hindu religion. I’ll go over all of the below…
1) Swastik (Swastika) is associated with the symbolism of Lord Vishnu – 108 diffrent symbols are associated with Lord Vishnu and Swastik is one of them. Swastik (Swastika) can be seen drawn on the right palm of Lord Vishnu or sometimes held in hand or held or drawn in 
some other form around Lord Vishnu.
2) Swastik (Swastika) as a symbol of Brahma (one of theTrinity in Hinduism) – One interesting thing about Swastika is that if it’s viewed from above then it looks as if its pointing in all directions simultaneously! This coincides with the four “all seeing” faces of Brahma and therefore at times Swastik might be associated with the symbolism for Brahma. ..
3) Swastik (Swastika) as a symbol for Surya (Sun god) – This sort of follows from the previous points in many ways. Sun is sometimes associated with various symbolisms used for Lord Vishnu and Swastik can be sometimes used as a symbolism for Surya (sun god) too! Also, since the top-down Swastik (Swastika) has this peculiar multi-directional (or direction-less depending on how you look at it) characteristic, it’s again associated with the mid-day Sun’s rays falling in all directions simultaneously. So, as you may observe, this association is pretty strong from both religious and nature worship point of view and even more so in the ancient times when nature worship was indeed at it’s pinnacle.
http://www.hinduisminfo.com/2008/12/what-does-swastik-symbol-mean.html
No 8 in Hinduism is misunderstood to be inauspicious.
Ashtami is a day Hindu‘s avoid initiating anything new.
In fact Ashtami is the day on which the Parayanaas or recitation of Vedas,Lalitha Sahastrama(Ashtamyaam,Navamyaam, Pourna Amavaasyam-Laliths Sahasranam Pala Sruthi) are recommended.
Durashtami signifies triumph of Good over evil.
A Thithi when Lord Krishna was born can never be inauspicious,notwithstanding convoluted explanations of some.
In fact I checked with a number of scholars who are unable to quote any authoritative source , instead they say ‘elders say’.
As for as I am concerned this is just non sense.
Consider this.
There are Ashta Dik Balakas(those who rule the Eight Directions)
There are Ashta Vasus.
In Chamaka Prasna we pray’Ashtavigum Sathichchame’
There are Ashtama Siddhis( Eight unique Powers granted in the path to Realization).
Nazis seem to have caught on no 8 and on this read on.
Weiss, who has been researching right-wing clothing and symbols for 10 years, is one of the authors of a new brochure titled “Das Versteckspiel” (“Hide and Seek”). The publication, which is aimed at teachers, social workers and youth group leaders, is designed to raise awareness of right-wing codes, which are often displayed at football games. “We want the soccer teams and the major fan clubs to be able to recognize the codes,” Weiss told SPIEGEL.
Secret Codes ‘Everywhere’
The brochure, which is published by a Berlin-based anti-racism group, Agentur für Soziale Perspektiven, lists 150 codes that are used by right-wing extremists, including certain clothing labels such as Thor Steinar and letter and number combinations. According to Weiss, the number 14 is a reference to the so-called “14 Words,” a phrase coined by the American white separatist David Lane (“We must secure the existence of our people and a future for white children“). The meaning behind “88” — often found in conjunction with 14 — is slightly more complicated. Here, the number eight stands for the eighth letter of the alphabet, forming “HH” — an abbreviation for “Heil Hitler,” a phrase which is banned in Germany. Similarly, the number 28 signifies “BH,” standing for “Blood and Honour,” a far-right network that was banned in Germany in 2000.
The secret code numbers can be found “everywhere,” says Weiss, including on license plates, tattoos and on signs at football games. “There are fans who travel 400 kilometers (250 miles) to a game just to hold up the four numbers that form 1488,” he says.
The Office for the Protection of the Constitution, Germany’s domestic intelligence agency, estimated that in 2009 — the most recent year for which figures are available — there were 195 far-right organizations in the country with around 26,000 members. The agency can shut down Kameradschaften, gangs or brotherhoods which are deemed violent. But many other groups in the neo-Nazi scene — such as rock bands with suggestive lyrics or clothing companies with coded symbols — often fly under the legal radar, provided they don’t openly display symbols like swastikas or explicitly support Adolf Hitler or his party.
http://www.spiegel.de/international/germany/0,1518,770820,00.html