NEW: Secretary of State Marco Rubio warns the U.S. is facing "a new wave of this old evil," arguing that far-left extremist violence has surged to levels not se

NEW: Secretary of State Marco Rubio warns the U.S. is facing "a new wave of this old evil," arguing that far-left extremist violence has surged to levels not seen in decades. Rubio pointed to a series of recent deadly attacks by extremists: —the assassination of Charlie Kirk —the killing of UnitedH…