There is presidence at least to protect the individual who is spurred to action by the desecration of our flag if the burning of it is defended under the 1st amedmant.
The fighting words doctrine, in United States constitutional law, is a limitation to freedom of speech as granted in the First Amendment to the United States Constitution. In its 9-0 decision, Chaplinsky v. New Hampshire (1942), the U.S. Supreme Court established the doctrine and held that "insulting or 'fighting words', those that by their very utterance inflict injury or tend to incite an immediate breach of the peace" are among the "well-defined and narrowly limited classes of speech [which] the prevention and punishment of...have never been thought to raise any constitutional problem."
There are certain well-defined and narrowly limited classes of speech, the prevention and punishment of which have never been thought to raise any constitutional problem. These include the lewd and obscene, the profane, the libelous, and the insulting or "fighting words" those which by their very utterance inflict injury or tend to incite an immediate breach of the peace. It has been well observed that such utterances are no essential part of any exposition of ideas, and are of such slight social value as a step to truth that any benefit that may be derived from them is clearly outweighed by the social interest in order and morality.
– Chaplinsky v. New Hampshire, 1942