The “No Bad Stuff” Clause

Statists frequently sound as though the Constitution had a “No Bad Stuff” clause. (Typical example here.) I don't know how to break it to them but the Constitution doesn't actually have a “No Bad Stuff” clause. On the other hand, the UN's Universal Declaration of Human Rights includes a “No Bad Stuff” clause in Article 29:

These rights and freedoms may in no case be exercised contrary to the purposes and principles of the United Nations.

Idealist translation: All good stuff! No bad stuff!
Realist translation: The preceding 28 articles guarantee hot air. Anything they promise can be set aside if someone influential decides they're inconvenient.