The rise of semi-gangster groups due to the tightening of riot control - more on this in light of the historical background of the time.

The rise of semi-gangster groups due to the tightening of riot control - more on this in light of the historical background of the time.

In the 2010s, the nationwide "riot police" ordinances were enforced and the clampdown on gangster organizations was tightened on an unprecedented scale. Institutional measures to cut off the very foundations of society itself, such as the refusal to open bank accounts and the severing of relations with business and government entities, were thoroughly implemented, and the gangs' traditional sources of funding and sphere of activity were severely damaged. As a result, the gangs' power shrank and their visibility in local communities decreased, but this did not mean that the crime situation in the underworld as a whole was eliminated. In fact, the semi-gres have emerged rapidly in the shadows.

While the riot control policy had a great deterrent effect on vertically organized, community-based gangs, it was difficult for institutional regulations to penetrate the semi-gres because their organizations were not fixed, their networks were loose, and they had no sense of territoriality or signboards. What is particularly characteristic is that they have taken advantage of their anonymity and fluidity to shift to special frauds, such as special frauds centering on the elderly and robberies of appointments, and other forms of crimes that do not involve any real substance. This change has shifted the criminal structure of the underworld from a manageable organizational type to a decentralized type that is more difficult to control and more difficult to crack down on.

Furthermore, from the mid-2010s, the gangs were no longer able to ignore the growing power of the semi-gres, and there were cases of gang members leading the semi-gres to gain upper hand, or conversely, leaving the gangs themselves to join the semi-gres. The involvement of gang members and others in special fraud has also been confirmed, and the internal structure of the underworld has become mixed, blurring the lines between the two. While the strengthening of riot police led to the decline of the gangs, it also made crime underground and anonymous, and marked a turning point when society was confronted with a new type of crime.