>>763008
Those bishops praying with the heathen folk are praying for their convertion to Christ. So it's a good practice because in their eyes you aren't rejecting them and they might gain more respect for the church and eventually convert.
Better than the "stay away from me heathen".
>Or allowing these people to pray in a catholic church during a mass? (I saw that recently in TV, it was during a funeral mass)
As a rule we don't kick out people from the churches (specially in a funeral of a friend of theirs) we must assume they are asking God for the good of his soul (that is they must be like an atheist that goes to Mass, stay there silent, and respect the Christian rites).
Now if they do their satanic rituals they shouldn't be allowed to be there and if a priest knows this and does nothing, he should be reported to the Bishop to punish him according to his actions, and in the case of a Bishop he should be reported to the local Episcopal Conference and/or the Holy See herself.