Why is ms-13 dangerous?

i say that they are not dangerous i say that ms-13 are just punks

Added: While the answer above may be true, the fact remains that ANY organized group which engages in criminal activity is a concern to society. It gathers a coordinated group together with the main reason for their existence being the intimidation, extortion, engaging in illegal activities and the robbery of other people and organizations. . . in other words, the illegal disruption of society.