[crpatino]

The "two corners of the White House" part is totally in line with the "heads on pikes". It is all part of the same figure of speech.

The part everybody is missing is "I'd actually like to go back to the old times of Tudor England", which provides the context to understand the stuff people is having a meltdown about. This is not "heads on pikes" by a bunch of salvages; it is "heads on pikes" as part of the official policy of an absolutist State.

The way I read it, Bannon said: "I would have them face the death penalty, if there was a legal way to do so. And I would use their cases as deterrence from other would be traitors."

I don't see it as a call to have civilian supporters attempting against the lives of those two high ranking officials; but could be interpreted as a declaration of intent to pursue and extend draconian powers for the (Executive Branch of the) US Government. I will let you decide which of the two interpretation is gravest.