As Andrew Breitbart said:
"Politics is downstream from Culture"
And I would add that Culture is downstream from Race.
A culture is something that is created by a race over generations, characterized by a unique language, customs, religion, clothing, cuisine, architecture, etc.
I think that Race and Culture go hand in hand, even if you have a black man, born and raised in America by White parents, he at a genetic level will retain the majority of the characteristics of his black ancestors.
For instance: Blacks have on average 15% more muscle mass than Whites. This genetic mutation makes sense given that blacks come from a very hot climate and they need to retain as much moisture in their bodies as possible. Blacks are also a warrior/hunter/gatherer race and additional muscle mass is necessary to combat other tribes and survive during long hunts against large, dangerous African game.
On the other hand Whites have, on average, 15% more grey matter and about 15-20 more IQ points than blacks. This makes sense because Whites (and all groups north of the Tropic of Cancer) have to endure very harsh winters and encounter significant intellectual and logistical challenges when preparing to survive the winter months.
In Africa and the Tropics you have two seasons: the dry season and the rainy season. As such it is relatively easy to survive year-round because food is always plentiful.
In the north, half of our animals are gone for up to a third of the year. So we must learn specialized skills such as seasonal farming, food storage, meat salting, canning, refrigeration. Not to mention more advanced architecture, clothing, systems of transportation, heating and sanitation.
Whites also have more idle time indoors during the winter that we learned to occupy with intellectual pursuits, books, art, music, poetry, invention and even the Internet and video games of today.
So when we see our lands being overrun with Africans and Arabs with sub-80 IQs the cultural differences we notice are the product of generations of genetic adaptation to the biome to which they are accustomed.
They don't need high IQs, they don't need philosophy and they don't value civility and morality in the same way that we do because it isn't necessary to thrive in their civilization as it is here in White, Eurasian or East Asian civilization. Just like how we don't need that additional muscle mass or melanin that they need for the environment that they are accustomed to.
The "cultural" clash we are experiencing is the result of two incompatible groups occupying the same space at the same time. One is native (or at least genetically adapted to live in a Northern temperate climate and society) and the other is foreign and incapable of assimilating to the host culture.
Each race is perfectly adapted for the environment in which they are designed for and as such should remain in the areas that they are best suited for.
If you introduce large predatory fish into a biome where there are few powerful predators, the smaller fish will quickly go extinct.
And Humans are no exception.
These people have proven themselves to be not only incapable of assimilating to our culture, but they are openly hostile in many cases.
Unless we want our nations to turn into the barbaric tribal warzones that the southern races come from, we must stand our ground and not be afraid to bring the question of Race to the table, not as the only factor, but as an incredibly significant one that influences other factors that are downstream from it.