Saturday on PBS News Weekend, what's behind the current surge in COVID infections and what it tells us about how we deal with the disease moving forward. Then, the latest on massive protests in Serbia accusing the president, a strong Putin ally, of rigging elections. Plus, how Minnesota launched a redesign of its state flag to update its culturally insensitive imagery. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders