......... but I don't really think "everything and everyone belongs to the people" is going to work.
.................
(That is communism.
Socialism means that taxes are used make incomes more level (not equal: if you make more money, you will still have more money) and have public healthcare, education, transport and a minimum income (so nobody has to live on the streets) for everyone.
Most western-european nation are social democracies: a democracy with kapitalism plus a social system to create equal opportunities by giving everyone access to education, healthcare, and so on. (Although a few decennia of budgetcuts have made it less accessible in a lot of countries.)
Communism is a dictatorship system where nobody is allowed to have more than someone else. Everything belongs to the people. And the goverment controls production and distribution of food, goods and education. Making profit is a crime and no matter your contribution to the system: you get the same amount of food, the same color shoes and the sameclothes as everyone. (And that's why it doesn't work...)
This is in short how I understand it...)
Enough about politics:
yes, you can make it. And you are free to do so.
It has been done before, with Der Undergang (Downfall) as a recent example. When announced a lot of Germans didn't like the idea. The main actor was predicted he would kill his career. But it was a great success in and outside of Germany. It's great drama showing how the madness of Hitler and his system painted him in a corner where it slowly become evident he won't get out alive unless he gives up.
I've also seen a series about the rise of Hitler: how his coup d'etat failed and how he used his time in prison to write Mein Kampf. I think that was a dramatized series on Discovery.
I think there is a great dramatic story in both the rise and fall of Hitler. The historical context that allowed him to rise to power is like a classic underdog story of a nation being broken by other nations with the Versailles Treaty. The United States wanted to be independant because they were taxed by a king far away. Weimar Germany's economy collapsed due to the repair payments they had to pay for losing The Great War. They were not allowed to have an army. Inflation was crazy. Eventually they had 1000000 D-Mark bills to do groceries, unemployment that was going through the roof...
In such a context it is easy to fall for a man who creates jobs and boosts the feeling of dignity. Like a trojan horse he was let in to the center of power...
As long as you don't make it propaganda that glorifies him, you'll be fine, although there will always be people against it. It is a sensitive subject: a lot of people have lost family and loved ones because of him. (And that group is larger than Jews only. My grandparents lost brothers who were arrested and deported to do forced labor. And of course many many of soldiers gave their lives to end the madness of Nazi Germany. Something we, the Dutch, will honour tonight.)
Actually, if you make it glorifying propaganda there is a market for it as well: rumour has it that the largest group of neo-nazis can be found in the USA.
But most people (me included) would think that is immoral and impossible without forging a part of history and lacking a moral compass. In a lot of countries there is a change people would at least start a case against the release of the movie.