This morning Neda Ulaby of NPR reported on Political Speeches and the Public Domain, which covers a dilemma. Public speeches by politicians are normally considered to be in the public domain, but news networks recording such events often copyright their own recordings of these events, causing enormous difficulties for historians, students, and independent film makers to use these materials. They often require written permission before they can even examine this footage, and negotiate the circumstances under which material can be used. Arguing fair use can be problematic and expensive at best, requiring deeper pockets than many independent organizations can muster.
Thought provoking.