Tonight on The Last Word: Justin J. Pearson is reappointed to his Tennessee House seat. Also, Senate Democrats are demanding a probe into Justice Clarence Thomas's activities. Plus, Sen. Tammy Baldwin announces her re-election campaign. And President Biden speaks in Belfast celebrating 25 years of peace in Northern Ireland. Tennessee State Rep. Justin Jones, Jamelle Bouie, Sen. Tammy Baldwin and Fintan O'Toole join Lawrence O'Donnell.