An incredible political moment arrived over the summer. It would be a travesty if it was buried because of an all-out media offensive that wasn't che… - Owen Jones

There is a long tradition of left figures who are charismatic and deliver rousing speeches but who – like George Galloway – are easily portrayed as demagogic. They can rouse the affections of the already convinced, but few others. When they are the object of personal attacks, they attract little sympathy, and tend to respond in kind.
Corbyn, on the other hand, has a good shot at the title of most self-effacing and humble politician in parliament, and certainly for being the lowest expenses claimer among his colleagues. That helps shield him from the personal attacks that are normally dished out to figureheads of the left.

But if the Corbyn-led Labour party is to be successful, its supporters have to communicate. It is difficult, with relentless hostility raining down on your head, but that means adopting an inclusive, cheerful, positive approach: love-bombing opponents, even.

If [the Left] is overtaken by a loud minority who are, increasingly, bound by utter hatred towards anyone deemed to deviate from their sanctity of their cause, then there is no future.
If they succeed, they'll turn the left into an ever diminished rump that, to the rest of the population, comes across as vicious, vindictive, and spiteful, and certainly not a cause they'll want to be part of.