I think the minor amendments below sounds better.
It is true that crime is presently the largest serious issue in our society. While it can be argued that it is a result of the nature of rotten people, I believe that the social economical and demographical problems are likely to be the cause of crime.
There are several reasons why crimes may proceed from the nature of offenders. At first, one of the human essences is cruelty which may be on excessive levels in certain individuals. These people have higher tendency to perform brutal actions than others, resulting in that the likelihood to commit crimes for them is much higher. The testimony of serial killers that it is pleasant when they witness the death of their fellow-creature is a typical example. In addition, those who are mentally disturbed are likely to become the most dangerous offenders. Their motives of vicious actions are not quite definite. It could originate from disembodied voices in their head, which prompting them to damage others.
Despite above argument, I believe that a crime might be caused by social problems and social economic situation, hence poverty. Firstly, poverty is the environment which compels disadvantaged people to perform evil actions. For example, once basic demand such as food or safe refuge cannot be fulfilled by reason of financial struggles, law will not have adequate power to hinder people from implementing illegal activities to sustain their life. Secondly, inequality, which is an obvious social phenomenon, provokes resentment in those treated unfair; therefore, disruptive behavior or participating in rebels, which is responsible for adverse consequences to society, is regarded as a way to respond to injustice they received and also an approach to relieve their resentment.
In conclusion, in some extreme circumstances, the nature of bad person causes crime may be accurate; but in most cases, social issues are more likely to be the causes.
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