Push God out of the schools. If the people grow up without reference to God, then they will consider god irrelevant to day to day life and will focus on the things the school counts as worthy to pass on.
Break communication between parents and children so that parents can't pass on spiritual values to their children. Do this by pushing excessive child rights.
Remove restrictions on sex. Promote Sex as the biggest joy and Christianity robs people of this. People must be freed to enjoy it without restrictions. It's not just for those that are married, it is for everybody.
Build clinics for abortion and health clinics in schools. If people are going to enjoy the joy of sexual relationships they need no unnecessary fears or hampered with unwanted pregnancies.
Every person develops love bonds, so when a love bond wears out a person must be free to divorce. When one starts to grow, one must be free to get together with that person even if they are married.
Sexual enjoyment is the highest pleasure in humanity. No one must be denied and no one must be restricted how to enjoy themselves. Homosexuality, bestiality and even incest are desirable as long as nobody is hurt.
Debase art in all its forms. Corrupt music, painting, poetry and every expression of the heart and make it obscene, immoral and occultic. Debase the arts in every way possible.
Use the media to influence mass opinion. Create mass opinion that is receptive to these values by using TV, Film, The press Etc... Note well what western believers call normal, in the African church would be pornography.
Promote other faiths to be at war with Christianity and break this thing about Christianity being the only way to heaven. Promote the importance of Humanism and tell man he has the right to choose what he wants to be and he can make it happen.
Get the government to endorse every one of these nine strategies. Get the church to accept these principles and to say they're OK. Then legal ground is given for these values to get a foothold.