"No one can do back biting and unpleasantness and inuendo like the Tories".
Substitute for 'The Tories with 'the Jews', 'black people', 'Muslims' and so on and see how acceptable that sentence is.
I seriously think that, even with all the kerfuffle with the SNP and Miliband's 'Edstone' one reason why the left was quietly trounced in the last election was the invective of the left. I heard with my own ears and saw in the press and on Facebook Labour supporters calling Conservatives 'fascists', 'racists, 'bigots, 'Kippers' and 'Tories' (uttered in tones of loathing.) These same Conservatives being nice, kind, moral, responsible, pleasant, well mannered, hardworking, taxpaying, charity-donating, volunteering, decent people. They never answered back. They just voted.