In this conversation, the group discussion technique that daniel most clearly show is "Challenging ideas"
Explanation:
Whenever you are in a group discussion there will be differences among the opinions of all the people involved, then when we present challenging ideas this makes the discussion move forward to the point of showing evidence and supporting information to set the foundations of your opinions, which can create a debate between the parts.
The area of California in which we live is dry and arid, and yet we see grass growing in large areas around homes and office buildings. This practice is not only wasting water but is costing the city too much money—money that could be used for other projects.
I believe the answer is: italians take over and change white and black cultural traditions
The author make a reference on the migration of italian citizens to united states (mostly new york and chicago). The italian immigrants brought a mafia culture to united states which back than were in a fight for dominance for black and white culture.