17 We can no longer refrain from declaring how pernicious such measures are to the interests of the people, to the social well-being and the real good of Italy. The suppression of these societies only increases the misery, moral and material, of the people whom they sought to humanize by every possible means; it deprives society of a powerful conservative force, for their organization and the spread of their principles was a bulwark against the subversive theories of socialism and anarchy; in a word, it aggravates more and more the religious conflict which all men who are free from sectarian passion regard as fatal to Italy, whose strength, cohesion, and harmony it undermines.
Source: Spesse Volte (Vatican.va)