The values of the United States are what should be protected, not the flag. One of those values is the upholding of freedom of speech and expression. The right to express ones views and opinions must be held inviolable to an extent. While there is a case for defamation and hate speech laws because they have a very real and direct impact on people, the flag is only important insofar as people ascribe meaning to it. It is foolish to make illegal a view contrary to the mainstream that may not value the flag so highly.