A year ago, Rep. Jamie Raskin, D-Md., experienced two unimaginable traumas in the span of a single week: On New Year's Eve 2020, his son Tommy died by suicide after succumbing to mental illness. Then, on Jan. 6, 2021, just a day after Tommy's funeral, Raskin was at work in the U.S. Capitol with his daughter and son-in-law when a violent mob stormed the building in an attempt to overturn the results of the presidential election. His memoir, 'Unthinkable,' chronicles his search for answers in the grief that followed both events.