you can see nancy pelosi getting miked up for an interview or jesse jackson or robbie fielding questions. that, i think is so much of what happens and we wanted to reflect. david: text is important. you're showcasing the signs people are carrying. >> definitely. as propaganda, this change maker sign that was distributed to the whole room. as bill clinton is making his speech. in one way, is very powerful, but that is also clearly a message they are pushing. it is well orchestrated, particularly at this time. you saw the same thing with the michelle obama signs. then seeing this slapdash dem exit by bernie supporters is an interesting counterpoint that there is still an insurgent element. david: up next just how dangerous it is to clean up rio vision narrows at beaches. carol: that is next on bloomberg businessweek. david: i'm david gura. carol: and i'm carol massar. david: the dangerous and deadly business of planning up rio's beaches. and why the u.s. and japan may lose access to economic zones. carol: that is all ahead on "bloomberg businessweek." ♪ >> many must resist the issue. in

robby mook took a community-organized approach that got noticed by the clintons. his elevation to run the whole campaign this time is a vote of confidence in his style, his no-drama style, but also the strategy he approached it with, which now the team that is picking up where he left off in nevada, trying to go the distance against bernie sanders. carol: talk to us about the nuances of nevada and his approach. why it works. >> one of the things is that the person running the campaign this time told me that she looked at in 2008 as an area where they lost, and that led to them not winning overall, is that delicate -- delegate mass being different. the delegate mass in nevada means a vote in one precinct is not worth the same amount as one in another on caucus day. the obama campaign out to did -- out did the clinton campaign in that area, and the clinton campaign has learned from it this time. that is part of why, as i reported the story, you see a real effort from the clinton folks to go outside of the top population centers in the state. you also see them pickin