No doubt - Labours policies have been ill communicated and divisive (and yes, before you mention it - they don't work either).
I doubt however that ACT's and Winstons rethoric will do anything to foster a healing process - they are just alienating the other side of the chasm and making it larger.
Extremes (no matter on which side) never ever improve anything, they just breed extremes on the other side of the divide as well.