Existential properties of human existence in Heidegger's being and time

Based on his interrupted masterpiece 'Being and Time', this article evaluates Heidegger's relationship with Nazis, and with reference to Dasein's existential grounds in 'Being and Time' aims to prove why Heidegger could not have sided with Nazism and that 'Being and Time' can not be called as 'favoring national socialism'. Hence, in the first section I have tried to explain what Heidegger means by 'The Question of Being' which he assumes as main concern/problem. Then, in the following section I have tried to demonstrate why Dasein is chosen to solve 'the question of being' and tried to explain its existensial features. Finally the last section explaines that Dasein is considered to be existent-in-the-world, and hence in a routin and time. In the conclusion, based upon Heidegger's approach to his main concern/problem, I have tried to demonstrate why Dasein, Heidegger's main concern, does not serve to the ideology of Nazis. Key Words: Dasein, being, existing, co-existence ordinariness, be in the world, existential communion.