welcome. i m bob and acker gnatty. large crowds greeted the pope throughout the week as he emphasized his familiar themes of humility and concern for the poor. nearly 1 million pilgrims attended the welcoming ceremony. earlier in the week, francis celebrated mass. and he met with patients at a drug rehabilitation facility. the pope also visited a rio slum where he urged people living there not to lose hope. for more on the pope s trip, i m joined by father tom reese and a visiting scholar at santa clara university. he joins us from california. the pope is quoted as having told young people in brazil that he wants a mess. he wants trouble in the diocese. what s going on? well, this is a pope that has really brought excitement to the church. this is a pope who is a pope of poor people, of the slums, and now of young people. and he want does have a revolution. he wants people to recognize that the gospel of jesus is revolutionary. it s call for a concern for the poor, former i