Whether a compulsory consent is possible?

Objections

Objection 1 : It would seem that no consent can be compulsory. For, as stated above (Sent. ii, D, 25 [*FS, Question [6], Article [4]]) the free-will cannot be compelled. Now consent is an act of the free-will. Therefore it cannot be compulsory.
Objection 2 : Further, violent is the same as compulsory. Now, according to the Philosopher (Ethic. iii, 1), "a violent action is one the principle of which is without, the patient concurring not at all." But the principle of consent is always within. Therefore no consent can be compulsory.
Objection 3 : Further, every sin is perfected by consent. But that which perfects a sin cannot be compulsory, for, according to Augustine (De Lib. Arb. iii, 18), "no one sins in what he cannot avoid." Since then violence is defined by jurists (i, ff. de eo quod vi metusve) as the "force of a stronger being that cannot be repulsed," it would seem that consent cannot be compulsory or violent.
Objection 4 : Further, power is opposed to liberty. But compulsion is allied to power, as appears from a definition of Tully's in which he says that "compulsion is the force of one who exercises his power to detain a thing outside its proper bounds." Therefore the free-will cannot be compelled, and consequently neither can consent which is an act thereof.