'A very hopeful day for parents': FDA panel recommends Pfizer vaccine for kids aged 5-11

Dr. David Kessler, pediatrician and chief science officer for the Biden Administration's Covid response, talks with Rachel Maddow about what it means that an FDA panel has recommended the Pfizer-BioNTech vaccine for children between the ages of five and eleven in terms of the children who will receive it and the overall fight against the spread of Covid.