It may sound a bit absurd

Translated quote-of-quote from Anders Behring Breivik in today's court proceedings in Oslo:

"All unique peoples and cultures have an obligation to defend their existence against extinction".

So... questions of the day:

• Is this fundamentally true?, and
• where goes the limit of granularity?

Regarding this utmost consequence of violent ethnic and cultural protectionism, Breivik himself reportedly then went on to admit: "It may sound a bit absurd".