President Joe Biden on Thursday expressed support for medical professionals and local leaders who advocate for children wearing masks in schools in response to the ongoing COVID-19 pandemic, as he noted that he'd seen video that has gone viral of protesters who threatened doctors and nurses at a Tennessee school board meeting. "To the mayors, school superintendents, educators, local leaders who are standing up to the governors politicizing mass protection for our kids: Thank you," Biden said before giving a speech on drug prices. "Thank God that we have heroes like you, and I stand with you all, and America should as well."