An early childhood activist wants Father's Day to be renamed 'Special Person's Day'.

Dr Red Ruby Scarlet is pushing for the annual day on the first Sunday in September to be renamed so children without fathers aren't offended.

The activist, with a doctorate in early childhood studies, is wondering why the idea is so controversial.

'Why are we calling this political correctness when in fact it's about our rights?,' Dr Scarlet told Today Tonight.

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Early childhood activist Red Ruby Scarlet wants Father's Day renamed 'Special Persons' Day'

'There's a lot of Australian research that has actually informed a lot of international research ... that has demonstrated children's capacity to be really inclusive once they know about these ideas and they think, 'Wow, why are people seeing this as a controversy?.'

Today Tonight host Rosanna Mangiarelli had asked why little kids needed to be social justice warriors.

However Dr Scarlet, who insisted that was her real name, said families without fathers weren't opposed to the idea.

'We have single parent families, satellite families, extended families, lesbian and gay families,' she said.

Today Tonight host Rosanna Mangiarelli wondered why kids needed to be into social justice

Dr Red Ruby Scarlet wondered why her idea of renaming Father's Day was controversial

'There's a range of different communities across Australia.'

New South Wales Liberal minister David Elliott, who hails from Sydney's Hills District, said 'rubbish' like this would only incite extremists.

'Can't believe that someone who professes to be 'enlightened' would advocate such crap',' he said.

'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.'

He added renaming Father's Day was like getting rid of Anzac Day so draft dodgers weren't offended or scrapping Labour Day to spare conservatives from being upset.

'Dr Red Ruby Scarlet - you are the offensive one. May we should start a campaign to address that,' he told his Facebook followers.