The data is integrated into the Internet archive and available e.g. via the way back machine. Not sure if you can get the whole reddit dataset.

The archive warriors are downloading Reddit for a while already. 15.6 billion items and counting. You can help too:

https://tracker.archiveteam.org/reddit/

There’s a gut repo of the German constitution (Grundgesetz) with all changes with correct dates and authors:

https://github.com/c3e/grundgesetz

And it exists for all laws in Germany, too: https://bundestag.github.io/gesetze/

Created/funded by a government sponsored fund for open source software