Certainly, it is difficult to make the demands of the Gospel understandable to secularized people. But this pastoral difficulty must not lead to compromises with the truth.
“What is perfection in love? Love your enemies in such a way that you would desire to make them your brothers … For so did He love, Who hanging on the Cross, said ‘Father, forgive them, for they know not what they do.’” (Luke 23:34)
Those who with God's help have welcomed Christ's call and freely responded to it are urged on by love of Christ to proclaim the Good News everywhere in the world.
For many people today, practical atheism is the normal rule of life...If this attitude becomes a general existential position, then freedom no longer has any standards, then everyting is possible and permissible.
Evil too, will always be part of the mystery of the Church. And when we see what men, what the clergy have done in the Church, then that is nothing short of proof that he [Christ] founded and upholds the Church. If she were dependent on men, she would long since have perished.
An unusually good entry on the Catholic Herald entitled "Why Catholics should defend indulgences" gives a good account on indulgences.
It is a very good explanation on why they are a good that should not only be defended but promoted, and shows that it is entirely in line with Christian apostolic tradition.
Distinctions Matter
Distinctions Matter Forward
Missale Romanum
Pre-1951 Calendar