Is there a crime wave in blue cities?

Cities across America are experiencing a spike in violent crimes, Some commentators blame progressive policies for the increase, others say the pandemic exacerbated problems already under the surface. What is actually at play? We speak with Supervisor Matt Haney, San Francisco City Supervisor District 6 and Michael Shellenberger author of 'San Fransicko: Why Progressives Ruin Cities' to get their views on the causes and solutions to these problems.