Digitalocean is based in the United States, so if you host your instance there, you will have to follow the laws of that country to some degree (at least if the instance gets big enough for someone to notice). It will probably be similar if your instance is hosted in another country, and I dont think there is any country that is clearly neutral.

So my suggestion is to think about which countries your instance would mainly criticize, and then host in a “hostile” country. For example, if you want to criticize the United States, host in Russia or China as their governments wont care about that. Or vice versa.

Then the United Nations are holocaust deniers. Fact is that no international court or UN organ has even investigated the alleged genocide. Innocent until proven guilty.

Or you can just use Library Genesis, they have millions of books.