MSNBC's Ari Melber hosts "The Beat" on Thursday, August 25 and reports on new signs that Democratic voters are galvanized by the abortion fight, with the New York Times reporting now: “Democrats Dare to Dream.” Plus, the DOJ filing its proposed redactions to the Trump affidavit. Political science professor Christina Greer, Fmr. CIA officer David Priess and environmentalist Bill McKibben join.