NEW: Stephen Miller doesn't hold back when calling out left-wing political violence: "This is a fatal cancer to civilization." "The greatest risk that we have

NEW: Stephen Miller doesn't hold back when calling out left-wing political violence: "This is a fatal cancer to civilization." "The greatest risk that we have is that our institutions have grown too soft and too cowardly to be able to defend themselves against a mortal threat." [▻](https://video…