1. In my opinion, freedom of expression is we have rights to express our feeling, our thinking and our perspective.
2. For the individuals, you can vent your emotions and tell the people your feelings. You can say the wrong or right things straightway. For the society, you can know the true news from the media. Give the movement your own opinion about the issue such as food safety.
3. When your expression hurts other people or makes the bad result to the society or you make the demagoguery the government has the right to limit this kind of expression.