Anti-Semitism used to be widespread in Europe. As the Nazis took over in 1932 in Germany, the systematic persecution of Jews commenced, and after the outbreak of war, systematic genocide. The Holocaust and the occupation of European countries by the Wehrmacht resulted in making the tilted swastika ? the insignia of antisemitists since the end of the 1800s - the symbol of evil. The Nazi Swastika also tainted the Finnish Level Swastika, originating from the year 1918.
These two insignias share the shape but the symbolic content is completely different. They share no background. An uninformed person cannot tell them from apart: he does not know that the German symbol, tainted as evil is not the same as the Finnish, untainted and honourable swastika, and he abhors both. The Swastika is an ancient sign of luck originating from Asia, widespread in the world. Even today it is recognized as the insignia of the Falun Gong. The Swastika is included in the Finnish ornamentics for ages. By an extraordinary chance it was adopted to symbolic use at the same time but independently in Germany and in Finland.
Full article about the history of Finnish swastika by WW2 bomber pilot Aarno Ellilä:
http://www.virtualpilots.fi/feature/articles/honorable_swastika/