Cons:
Freedom of speech is an innately vague concept that calls for a clear definition and interpretation with regard to the meaning and permissible limits of ‘free speech’.
It can be misused by people to promote odious ideas, such as terrorism, racism, sexism, and fascism.
Freedom of speech during war like conditions can be detrimental to the integrity and security of the nation.
Freedom of speech can also lead to undesirable physical acts. For instance, hate speeches and pornography can often lead to hate crimes, rebellions, and rapes.
Hate speeches against religions can harm the right of citizens to practice religion of their choice.
Freedom of Speech on internet and other sources of media have made it essential to protect minors from being exposed to obscene and otherwise potentially harmful materials.
There is no ambiguity about the various advantages of freedom of speech, but with it come the adverse state of affairs that are detrimental to the evolution of the human society. Therefore, to make best use of the freedom of speech, it is essential to put a stop to its misuse by groups that advocate offensive ideas, such as terrorism, racism, sexism, and fascism.