How can be the problem of corruption be reduced?

I think reducing the corruption is very hard and complex problem. Most people consider that this problem is up to the president or the members of the National Assembly. However, I strongly believe that common citizens also can change this problem. For example, in Korea, many people gathered to have a candlelight vigil to express their opinions. They wanted to make a corrupt person retire from his job. He was nominated by the president, and the president liked him. At first, they did not give citizens any reaction. However, over 2 million people gathered in Gwanghwamun Plaza. Then finally he was retired. Likewise, I think common citizens can help to reduce corruption by expressing our opinions nonviolently.

Hi Chloe!