Why can't the MBTA hire enough bus drivers?

Since December 2021, the MBTA says they've been working on an "aggressive" hiring campaign to bolster driver numbers, with the goal of bringing bus services back to pre-pandemic levels. Now, in January 2023, they have fewer drivers than a year ago and bus service cuts continue to plague riders. Boston Globe Transportation Reporter Taylor Dolven joins The Common to discuss why the campaign failed, and how Boston's Black and Hispanic communities are paying the price.