Copyright is a restricted GRANT, not a natural or absolute right. Despite the "right" in the word "copyright", it is a right created only by OUR grant, a right of grant under restrictions.
However the right to copy is a natural right, the right to comment about a copy in polital context is a natural ABSOLUTE right.
When there is a conflict between rights we grant, in our being as a sovereign goverment formed of representative agents, and the natural rights we retain individuals also sovereign -- why the ABSOLUTE right remarked and protected by the Bill of Rights by the individuals, or the States, must be given the higher weighing.
Fyi above