You are allowed to draw parallels as you like. May I ask what you are drawing a parallel for? In order to make a point, to deepen a discussion, to make yourself understood? If yes, you ought to bear in mind that parallels with nazism are a source for many misunderstandings, that they are a good method to emotionalise a debate, and that they tend to offend people. If that's what you want...

One could express the same thing much shorter: drawing parallels with the Nazi period is not fruitful.