Yes. But not German National Socialists. Let us look at a historical example of another race supporting National Socialism at their own detriment. "Association of German National Jews" were a Jewish group which supported Hitler, worked in the interest of National Socialist causes, and were fervent in their beliefs. However, despite this, they were put in concentration camps. So, unless it is in your interest to die and be pegged (basically), no. You ought not in some cases.
The cases in which you ought not, or it wouldn't be in your interest would be where you were Slavic, Jewish, or Black. I firmly hold the belief, and it is scientific, that black people are an inferior race. Indeed, as the Homo erectus was deemed inferior in nearly all aspects, the Negro race is also. No doubt National Socialism implies a world where black people should not reproduce and/or they would be slaves at the behest of Aryans.
What is more important is slavic and Jewish. In science, these are not too far apart from Nordic people. It is therefore important to note that it is not only general, scientific race which excludes people from German National Socialism, but ethnicity and/or subraces as well.
Reasonably, only West Europeans and Scandinavians would be deemed as fit for reproduction and population growth in National Socialsm. Going any further in terms of genetics is purely arbitrary, and going further culture wise is also arbitrary.
Now, all this being said, Facism and National Socialism itself is not necessarily Germanic. It may be held by other ethnicities. Which is most reasonable. We, as a people, must hold to our own races, our kindred, and tribe. It is of the natural order to purge those weaker from our own ranks and to dominate other races. Only the fittest of our own kin must propagate, and only our genes must propagate. We must also help our own kindred as if they were our own. Being the state ought to exist as a barrier against other races and outsiders, we must also act as the state to help our fellow kin by socialist means. I firmly believe this is the correct stance in the absence of God.
In addition to this, as the Germans admitted that the Japanese had superior cultures, I admit the Germans have superior cultures to my own. Indeed the West European race is of the best stock in both creativity and intellect. Only the Jews can outmatch them, alas they are too concerned with greed and marxist ideologies.
So, National Socialism is something that may happen for yourself or anyone else. And, unless you are a foul and delusionial leftist, it is the best ideology. This ideology was the bedrock of the greatest societies, of Rome, of the Greeks, and of the Germans. We as a kinfolk must stand together, we must preserve our own kinfolk and make our own genes greater than others. Not submitting to foreign causes, and foreign miscegenation. But, this inherently means if you are not close to the Germanic race or ethnic clade, it is not a good approach to adapt German National socialism. Indeed as natural as savagery is, so too is conflict. For the defense of our own purity and well being, we must defend against all species and/or races otherwise. This is National Socialism and Facism, the bond of blood and soil.
Universal National Socialism is not possible. But National Socialism is good, irregardless. We must have the powerful on top, And the Triumph of our own kins will must dominate others. This is how we may transcend as a people and strengthen our race and kind.
Niggers are not to be tolerated. And all marxist subversions must be purged. Only the purest of pure. The sharpest of steel. The greatest among equals must thrive.