PBS hosted a spirited, earnest, mostly break-free Democratic debate in Milwaukee on Thursday night, and its post-debate analysis by Hari Sreenivasan was similarly different from the post-game chatter we've seen on cable news and network TV. When they joined Sreenivasan, liberal columnist Mark Shields and conservative columnist David Brooks agreed that Hillary Clinton started out the debate stronger and Bernie Sanders ended the night fighting on his home turf. Clinton's "strategy was pretty simple, it struck me," Shields said.