evidence: Republicans have sharpened their attacks on Minnesota Governor Tim Walz over his response to the mass protests that erupted in his state after the 2020 police murder of George Floyd. [...] The unrest quickly overwhelmed local authorities, prompting Minneapolis mayor Jacob Frey to request Mr Walz to deploy the National Guard two days after Mr Floyd's death on 25 May in 2020. [...] "Governor Walz is a 24-year veteran of Minnesota's National Guard," Ms Harris added. "He pushed the mayor of Minneapolis for details. That was his job."