This is apparently representative of what that means at this moment in time.
I think it's pretty extreme too, but on searching, none of the participants' positions seem to have been disowned by their own side. One of them actually fundraised $30000 afterwards.
https://www.youtube.com/watch?v=2S-WJN3L5eo 1 Progressive vs 20 Far-Right Conservatives (ft. Mehdi Hasan)
This is apparently representative of what that means at this moment in time.
I think it's pretty extreme too, but on searching, none of the participants' positions seem to have been disowned by their own side. One of them actually fundraised $30000 afterwards.