Rights and Obligations of the Lay Faithful (emphasis added)
Vatican II Lumen Gentium- Dogmatic Constitution on the Church
Para. 37. The laity have the right, as do all Christians, to receive in abundance from their spiritual shepherds the spiritual goods of the Church, especially the assistance of the word of God and of the sacraments. They should openly reveal to them their needs and desires with that freedom and confidence which is fitting for children of God and brothers in Christ. They are, by reason of the knowledge, competence or outstanding ability which they may enjoy, permitted and sometimes even obliged to express their opinion on those things which concern the good of the Church. When occasions arise, let this be done through the organs erected by the Church for this purpose. Let it always be done in truth, in courage and in prudence, with reverence and charity toward those who by reason of their sacred office represent the person of Christ.
Thus the Church put the following in the Code of Canon Law, which is a direct product of the Second Vatican Council:
Can. 211 All the Christian faithful have the duty and right to work so that the divine message of salvation more and more reaches all people in every age and in every land.
Canon 212 §3. According to the knowledge, competence, and prestige which they possess, they have the right and even at times the duty to manifest to the sacred pastors their opinion on matters which pertain to the good of the Church and to make their opinion known to the rest of the Christian faithful, without prejudice to the integrity of faith and morals, with reverence toward their pastors, and attentive to common advantage and the dignity of persons.
Can. 222 §1. The Christian faithful are obliged to assist with the needs of the Church so that the Church has what is necessary for divine worship, for the works of the apostolate and of charity, and for the decent support of ministers.
§2. They are also obliged to promote social justice and, mindful of the precept of the Lord, to assist the poor from their own resources.
Can. 227 The lay Christian faithful have the right to have recognized that freedom which all citizens have in the affairs of the earthly city. When using that same freedom, however, they are to take care that their actions are imbued with the spirit of the gospel and are to heed the doctrine set forth by the magisterium of the Church. In matters of opinion, moreover, they are to avoid setting forth their own opinion as the doctrine of the Church.
228 §2. Lay persons who excel in necessary knowledge, prudence, and integrity are qualified to assist the pastors of the Church as experts and advisors, even in councils according to the norm of law.
From the Catechism of the Catholic Church:
Para. 1916 As with any ethical obligation, the participation of all in realizing the common good calls for a continually renewed conversion of the social partners. Fraud and other subterfuges, by which some people evade the constraints of the law and the prescriptions of societal obligation, must be firmly condemned because they are incompatible with the requirements of justice. Much care should be taken to promote institutions that improve the conditions of human life.