I closely associate calling someone a "traitor" with a threat of death.
Its history up to the modern day makes it equivalent to a statement that your opponent should be killed for their opposition. National politicians will certainly see that as a specific threat.
Jo Cox (UK Member of Parliament) was murdered in 2016 by someone repeating claims that she was a "traitor".
That makes sense. I don't have that association, since the term "traitor" gets tossed around all the time in American politics, but I can definitely see how it would come across as a threat in an environment where it's not commonly used.
Its history up to the modern day makes it equivalent to a statement that your opponent should be killed for their opposition. National politicians will certainly see that as a specific threat.
Jo Cox (UK Member of Parliament) was murdered in 2016 by someone repeating claims that she was a "traitor".