Plus Dorner himself is an extreme right-winger, and he has not been cancelled, only Csurka.
From the economist.com
The left considers everyone to the right of Bernie Sanders an extreme right winger and everything to his left moderates.
From the battleland.blogs.time.com
So now John F. Kennedy is an extreme right-winger?
From the thestate.com
The big winner, to the extent that there was any, was extreme-right-winger Jean-Marie le Pen, leader of the xenophobic National Front.
From the time.com
Michael Young was an extreme right-winger and racist who devoted much of his life to propagating a skewed form of biblical fundamentalism.
From the guardian.co.uk
First he's a right-leaning moderate, then an uncomfortably extreme right-winger, then he spent the time after the convention trying to repaint himself as a moderate again.