Answer and Explanation:
I believe that freedom of expression is one of the most important rights defended by the first amendment. This is because we human beings are rational animals and we need to expose our thoughts and emotions to a certain subject, mainly when that subject involves social well-being and criticizes it for controversial and disadvantageous government attitudes.
An example of how free speech is important can be seen in the "Tinker v. Des Moines Independent Community School District" case when a school banned students from showing their views on how the US handled its wars and abused nations more sensitized.