A constitutional republic is not the same kind of government as what National Socialist Germany had. Comparing these two is like comparing apples and oranges.
The point is not Trump is Hitler, the point is about the separation of powers in government systems.
Discussion
No, indeed it isn't. The question is how much are people willing to move the slider and in which direction.
And also, which people? There are many groups. Will some choose to pull the slider while other groups choose to push the slider? Who knows?
The citizens, as a whole and individually. Indeed the diversity of opinions and their acceptability are context dependant. It's up to everyone to decide the society he wants to live in and act accordingly.
American politicians, for example, are interested in how blacks will vote, or how the hispanics will vote, etc. There are other kinds of groups too, Muslim, Christian, etc and I know that different races can be Muslim or Christian, so this can be complicated. However, people naturally tend to form groups based on whatever they find important to them.
So, it will be interesting to see how these groups push or pull the slider.
Sure! and Trump and his actions are an example of that.