The Catholic Church is the largest denomination of Christianity.
It comprises the Roman Catholic Church, which follows the western rites or traditions, and the Eastern Catholic Churches, which follow eastern rites. Its head is the Pope, who is based in the Vatican, a city state within Rome. The church has a long history and its position has evolved on many issues over the centuries.
The Catholic church has been criticised on a wide variety of topics:
"Look at most Catholic countries until the 1960s and beyond, in South America or Ireland or Spain: the picture of the social, political and economic effects of Catholicism is in its essentials the same. Women enslaved to child-bearing, over-large families perpetuating ignorance and poverty, backward social policies and the iron grip of a clergy acting like the Stasi in controlling the minutiae of private lives through the confessional and the influence of fear - fear of hell, among other things."
- Child sexual abuse by clergy
- Sanctioning religious war in the Crusades
- Being anti-science and persecuting scientists such as Galileo Galilei
- The Inquisition
- Supporting or not criticising fascist regimes, including Pius XII not openly criticising the Nazi Party
- Resisting the use of contraception
- Backward social policies
- Misogyny and resistance to women priests
- Questionable use of funds, lack of transparency and unwillingness to be audited by a 3rd party 
- Christian attitudes to sexuality
- Moral failure of mainstream religion
- Advice on deconverting
- Society of St Pius X
- Holy See (Vatican) website
- Catechism of the Catholic Church
- Nick Cohen, Pope Francis a liberal free thinker? Don’t kid yourself, The Guardian, 20 June 2015