In this direction it affirms Kant: The resistance that frustra the impediment of a effect promotes this effect and is in agreement it. However, everything that is unjust is an obstacle to the freedom in accordance with universal laws. But the coercion is an obstacle or resistance to the freedom. Consequentemente, if a certain use of the freedom is proper it an obstacle to the freedom in accordance with universal laws (that is, it is unjust), the coercion that to this if opposes (as an impediment of an obstacle to the freedom) is in agreement to the freedom law in accordance with universal (that is, it is joust). Therefore, on to the right for the beginning of contradiction it has an ability to exert coercion on that it violates.
(MC, D) the order of the freedom of the rational right and the reciprocal mechanism of coercion demonstrates the same structural characteristics of equality, symmetry and reciprocity. The mutual coercion is the external way by which the order of the freedom it right rational is represented and as it gains reality. The last end of the right is the external freedom. The reason for which the men if had congregated in society and had constituted the state, is to guarantee the maximum expression of the proper personality, that would not be possible if a set of coercitive norms did not guarantee for each person a freedom sphere, hindering the breaking on the part of the others. The coercion is in accordance with the freedom because it is the obstacle to that she goes against the freedom, being joust the college to coerce that one that is unjust. The preponderant function of the science of the right in Kant it is the college to coerce. Insigne philosopher does not argue as a theoretician of the jusnaturalismo, looking for to know if it has moral justification to be able to have legitimate coercion of men on men.