Sanders and Perez on a unity tour?

WTF? This clip wonders why Sanders would do this with Perez, given Perez and the corporate Democratic Party establishment have proven they don't want anything to do with their own progressive wing. This has been reinforced since the last election as well. He speculates that perhaps Sanders thinks he can influence Perez on this tour to be a genuine populist, but it seems give the history it is the opposite: Perez and the Party and just playing to appearances to get the progressive vote when they have absolutely no intention of following through on progressive promises. It's say to see Sanders being played this way, just like he was during the election.