The First Amendment to the Constitution, which protects freedom of speech and expression, does not extend to particularly inflammatory types of speech and expression, which includes flag burning  Freedom of speech and expression is an important right, which is why it is listed first in the Bill of Rights; it is central to a fair and free democracy. However, it has limits. Some forms of speech are contrary to the values of democracy, namely when they infringe upon or violate the ability of others to enact their own rights and freedoms. This is why such things as incitement to hatred, other violence-promoting speech, as well as defamation and perjury are legislated against; they are expressions that infringe the rights of others, by causing fear and increasing risk of harm in case of hate speech, and by harming reputations and the effective administration of justice in terms of defamation and perjury respectively. Rights stop where harm to others begins. In the case of flag burning, as the dissenting opinion of Justice William Rehnquist on the issue says, the act is an extremely visceral one, and is often perceived as a direct attack on the core values of America itself, which many consider to be representative of those values, leading to feelings of anger and violation1. It is an infringement of these offended people's rights when flags are allowed to be burned.  1Goldstein, Robert. 2000. Flag Burning and Free Speech: The Case of Texas v. Johnson. Lawrence: University Press of Kansas.