Paragraph 70 treated corruption in the context of economics. In paragraph 77, the context is the political.
The bishops note how corruption has affected all branches of the government:
A major negative factor observable in much of the region is the intensification of corruption in society and the State involving the legislative and executive branches at all levels. It also extends to the judicial system, which in its ruling often sides with the powerful and fosters impunity, thereby jeopardizing the credibility of government institutions and increasing the mistrust of the people. That phenomenon goes hand in hand with a deep contempt for legality.
An important addition here is the mention of impunity. Crimes go unpunished; many are not even investigated.
This leads to a lack of credibility of the government and mistrust. Thus many people are reluctant to even report crimes, since they see little chance of justice being done or of witnesses being protected. Sometimes this situation leads to people taking the law in their own hands, leading to cycles of revenge.
Another possible result of rampant corruption is disenchantment with politics and a withdrawal from involvement in the public sphere.
Broad sectors of the population, especially young people, are increasingly disenchanted with politics, particularly with democracy, because the promises of a better and more just life were not fulfilled, or were fulfilled only partially.
The bishops therefore note the importance of formation in democracy and participation.
Thus it is forgotten that democracy and political participation are fruit of the formation that becomes a reality only when citizens are conscious of their fundamental rights and of their corresponding duties.
Thus in many countries in Latin America, CARITAS and other Catholic institutions have projects that from people in their human rights and duties.
Here is an English translation of the 2007 document from the Aparecida Conference.