Neville Wran RIP

I don't suppose that any amount of factual information will change the mind of anyone who is determined to perpetuate that misrepresentation of the ABC.

A number of independent investigations have shown that the oft repeated claim of bias is not borne out by the facts.

Here is just one of many such investigations.
Is the ABC biased and inefficient? Here's what the data says | Media | theguardian.com

Here is a sample of what they found.
Complaints have historically been split evenly between right and left viewer who feel their team is hard done by Aunty. During the 2003 invasion of Iraq there were 147 complaints of pro-US coverage and 144 complaints of anti-US coverage. On this Wayne Errington and Narelle Miragliotta wrote in 2011, "there appears not to be any factual evidence to back the claim of left-wing bias" at the ABC.