This is the problem of the hypocrites. They perceive themselves to be promoters of peace.
Corruption is of a few types, namely corruption in values, corruption towards blessings and corruption of the body.
Corruption in values is present when people have hypocrisy, act immorally, or commit crimes such as stealing, lying or bribery.
Corruption towards blessings happens when a person uses the blessings, which Allah U has granted him, wrongly. For example, Allah U gave him a well, but instead of maintaining it and benefitting from it, he fills it up with soil! Here, he has corrupted something which has a practical use in creation.
An example of corruption of the body is when it is said to a person: “Do not eat too much, or you will fall sick!” However, he still continues to eat a lot of food which will harm his body. Another example is the person who is told: “Do not drink alcohol as it will lead to cirrhosis of the liver.” However, he still continues drinking.
The corruption of values and the corruption towards blessings are the more dangerous types of corruption. This is because, both of them are connected to the society as a whole. When corruption surfaces in a group of people, they have actually laid down for themselves the torment of Allah U. Also, when vices, which are also included in the corruption of values, such as fornication and usury are widespread, they will cause harm to the community. Corruption is among the characteristics of the hypocrites.
They corrupt with the claim that they are creating peace and with the belief that they are promoters of peace. Hence, they corrupt values, blessings and their own selves.