Tonight on The Last Word: New questions emerge over the source of George Santos's income. Also, the Russian invasion of Ukraine is approaching its one year mark. Plus, President Biden urges Americans to "pay attention" to Martin Luther King Jr.'s legacy. And Trymaine Lee previews the upcoming "National Day of Racial Healing: An MSNBC Town Hall." Isaac Stanley-Becker, Peter Strzok, Amb. Michael McFaul and Rep. Nikema Williams also join Lawrence O'Donnell.