Specifically, Canon 14 on Baptism from Trent's Seventh Session reads as follows:
CANON XIV.-If any one saith, that those who have been thus baptized when children, are, when they have grown up, to be asked whether they will ratify what their sponsors promised in their names when they were baptized; and that, in case they answer that they will not, they are to be left to their own will; and are not to be compelled [cogendos] meanwhile to a Christian life by any other penalty, save that they be excluded from the participation of the Eucharist, and of the other sacraments, until they repent; let him be anathema.Notice that Trent is saying that the people who reject Christianity upon coming of age, but who were baptized as infants, are to be compelled beyond excommunication. I'm not aware of Roman Catholicism actually practicing this in modern times, but can any Roman Catholic reconcile a view of religious liberty and self-determination with Canon 14 above?
The freedom of the act of faith cannot justify a right to dissent. In fact this freedom does not indicate at all freedom with regard to the truth but signifies the free self-determination of the person in conformity with his moral obligation to accept the truth. The act of faith is a voluntary act because man, saved by Christ the Redeemer and called by Him to be an adopted son (cf. Rom 8:15; Gal 4:5; Eph 1:5; Jn 1:12), cannot adhere to God unless, "drawn by the Father" (Jn 6:44), he offer God the rational homage of his faith (cf. Rom 12:1). As the Declaration Dignitatis humanae recalls, no human authority may overstep the limits of its competence and claim the right to interfere with this choice by exerting pressure or constraint. Respect for religious liberty is the foundation of respect for all the rights of man.- Cardinal Ratzinger, then Prefect for the Congregation of the Doctrine of the Faith (formerly known as the Inquisition), Instruction on the Ecclesial Vocation of the Theologian, Section 36 (footnotes omitted)(24 May 1990)
One cannot then appeal to these rights of man in order to oppose the interventions of the Magisterium. Such behavior fails to recognize the nature and mission of the Church which has received from the Lord the task to proclaim the truth of salvation to all men. She fulfills this task by walking in Christ's footsteps, knowing that "truth can impose itself on the mind only by virtue of its own truth, which wins over the mind with both gentleness and power".
How is the alleged freedom of self-determination consistent with compulsion beyond excommunication? That's the question for my Roman Catholic readers.