This 13 May incident was not only stated as historical moment, it also needed to be remembered by all Malaysian to be united and live in harmony. There will be no riot as 13 May incident if we want to. One of the lesson that we all Malaysian can get is the loss of lots of lives and properties. This kind of incident had caused bitter experience to those who loss their relatives and families.
Besides that, the government also has to announce 'darurat' or Perintah Berkurung because of the riots. This was to ensure the safety of the citizen in order to reach its stability back. Just imagine, if we were in that kind of situation, this would make things difficult as our daily routine is abnormal without communicating with others harmoniously.
In addition, this incident would happen again if we still don't have awareness about sensitive issues such as National Language, Malay's special rights and so on. Thus, we have to respect what's in the rules and many others. In short, the responsibility of the peaceful country is in the Malaysians ourselves.