The Duke and Duchess of Cambridge's new baby should be able to grow up "without constant interference and intrusion", the pressure group Republic says.
Graham Smith, Republic's chief executive, says the royal birth raises questions about Britain and its democratic values.
The organisation, which campaigns for the abolition of the monarchy, launched its #bornEqual initiative earlier in the month, calling for every child to be born equal in political status and rights.
"The arrival of a new baby is always a cause for celebration - Kate and William will be thrilled. But we should remember that their son hasn't chosen to be royal - he has a right to grow up without constant interference and intrusion. The media, and all those who say they support the Royal Family, should remember that over the coming months and years," Smith said.
"Here is a new baby whose career, religion, even personal relationships, have already been mapped out. Thanks to the monarchy, he will have very few real choices in life - so let's give him space to grow up as normally as possible.
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"Meanwhile this is an opportunity for the rest of us to consider whether this circus is the best way to run things.
"The monarchy is a political institution and a royal birth raises lots of serious questions about Britain and our democratic values. That's why we've launched our #bornEqual initiative earlier this month."
