Freedom of Expression/Limitations - Restrictions/Permissibility
Have political theorists or philosophers discussed the permissibility of exceptions to this right?
Yes. The most famous defense of the freedom of expression principle is written by John Stuart Mill, who did include exceptions to this protection. Mill believed that freedom of expression should be curtailed when the circumstances of the message are intended to instigate violence or criminal activities. Mill also claims that this exception stems from the government's duty to protect others from harm, which is more broadly known as the "harm principle." This, Mill claims, is the only context in which power can be "rightfully" executed over others (On Liberty 13). Mill uses the example of a corn-dealer, who is starving the poor. When this fact or opinion is published through the press, it is entirely permissible under Mill's doctrine. However, when this opinion is advertised to a large and unruly mob, expression of such sentiment should be curtailed because, if shared, it could cause immediate harm and instigate criminal or violent activities (On Liberty 52). Mill's threshold for regulation of expressions is extremely narrow; it could be argued that he does not exempt hate speech because it does not cause immediate harm to others. While Mill states that only the harm principle should be applied to regulations of freedom of expression, Joel Feinberg believes that the harm principle is not sufficiently broad enough to account for hate speech. He stipulates that an "offense principle" is also needed. Feinberg believes that the harm principle is too high of a standard and that the government has the right to censure some speech if they deem it too offensive. Since the offense principle lowers the standard for censure of free speech, so too should the punishments be lowered. Feinberg defines offense to be a "negative mental state" (Simpson 237). Feinberg justifies the offense principle by stating that being offended, or being in a negative mental state, actually impedes on an individual's liberty because being offended impedes on his/her daily activities (Simpson 238).
References:
Mill, JS On Liberty
Simpson, Robert Mark. “Regulating Offense, Nurturing Offense.” Politics, philosophy & economics 17, no. 3 (2018): 235–256.