An early childhood activist wants Father's Day to be renamed Special Person's Day, so that kids without dads won't feel left out.
Dr Red Ruby Scarlet, an Australian activist with a doctorate in early childhood studies, has been labelled offensive for pushing to change the name of the annual day for dads.
Speaking on news programme Today Tonight, Dr Scarlet denied it was a case of PC gone mad.
"Why are we calling this political correctness when in fact it's about our rights?"
She said Australian research had "actually informed a lot of international research that has demonstrated children's capacity to be really inclusive about these ideas and they think, 'wow, why are people seeing this as a controversy?'"
She said many families without fathers supported the idea.
But New South Wales Liberal minister David Elliot said her ideas were "rubbish."
Writing on Facebook, he said he "can't believe that someone who professes to be 'enlightened' would advocate such crap".
"People still celebrate fatherhood even after their father and grandfathers have passed away, in fact for many people Father's Day is a wonderful time of reflecting and remembering.
"Dr Red Ruby Scarlet you are the offensive one. Maybe we should start a campaign to address that."