Roman Catholic leader warns against a world in which "the lights of commerce cast the light of God into the shadows; when we are concerned for gifts, but cold toward those who are marginalized."
At least 34 people in Congo have been killed in protests since Monday, a human-rights researcher has claimed.
The Rwandan government dismissed an apology offered by Rwandan bishops as "profoundly inadequate."
Pope reaffirms Church's stance on abortion but says, 'There is no sin that God's mercy cannot reach and wipe away when it finds a repentant heart.'
Catholic priests have been indicted for alleged murder during the genocide of 1994.
Pope notes 'how quickly those among us with the status of a stranger, an immigrant or a refugee become a threat, take on the status of an enemy.'
Francis urges respect for gays and transsexuals but says normalizing gender theory with young people is 'ideological colonization.'
Scores of anti-Kabila protesters were killed in recent clashes with security forces.
The pontiff urged journalists not to stoke fear.
'Mercy was the salt which gave flavor to her work, it was the light which shone in the darkness of the many who no longer had tears to shed for their poverty and suffering,' pope says.
Death toll stands at 290 people with 10 still missing in Amatrice five days after an earthquake struck central Italy.
"Looking upon that cruelty, in that concentration camp, I thought immediately of the cruelties of today," he said after last week's visit.
"If I speak of Islamic violence, I also have to speak of Catholic violence," said Francis.
Pope Francis became the third pontiff to visit the Nazi death camp where over one million were killed.
After serving 33 months in jail and 15 months under house arrest, the 65-year-old monsignor is free.
The pontiff did not name any countries.
Religious leaders are now rejecting bad acts by Catholic bishops, criticizing believers for their homophobia and condemning extremist Islamic jihadists.
The pope angered Turkey by using the same term in a statement earlier this year.
Church conservatives blast Francis as 'irresponsible' for comments on the 'crisis of marriage.'