The pope is visiting the UK and will meet lots of protests. There are two very good reasons for this, firstly the conservative Catholic view on homosexuality. The Pope's view on homosexuality should have been abandoned long ago, but I guess you cannot teach an old dog to sit. In an organisation where the highest position is elected from a group of very old men that are not in touch with the real world, it may be unevitable to get a modern view on society.
Secondly, the Catholic pedophile scandal that has unraveled lately. Apparently this has been going for a long time and at a rather large scale. This obviously is totally unacceptable and making matters worse is the church's attempt to keep it quite and to gloss it over. The pope would have needed to publicly announce that it is terrible and unacceptable, which he has not.