The assault took place in May in Myanmar’s capital Naypyidaw but a public campaign escalated last week after the girl’s father spoke to local media, venting his anger about the inquiry’s progress.
He gave details of how his daughter had returned from nursery with injuries doctors told him were the result of rape.
On Saturday in Yangon, demonstrators descended on the police’s Criminal Investigation Department (CID) in the city’s north.
Many dressed in white, carrying banners in Burmese and English, and chanting for “justice” for the girl as well as better security for the nation’s children.
“As a mother of a daughter, I came here to call for the truth,” 31-year-old Ei Mon Ko told AFP.
One man was arrested Wednesday and charged with the attack, although there is public scepticism over whether the authorities have the right person.
In a press conference Friday, police cited the use of CCTV footage as evidence against the suspect.
The nursery has been closed down and six other private kindergartens in Naypyidaw are temporarily shut.
The case has horrified the country, with a Facebook campaign gathering momentum for weeks as people changed their profile photos to call for “Justice for Victoria” — a pseudonym given to the girl.
The president’s office shared the trending icon on its official Facebook page, while numerous Burmese celebrities have echoed the calls for justice.
But Saturday’s protest was the first time the anger spilled offline onto the streets.
“We’re reaching the worrying point where no man can be trusted,” said 18-year-old student Yamin Eizali.
Child rights experts at NGO Terre des Hommes (Lausanne) told AFP child rape is “very common” in Myanmar, and they hear of about two cases a week in just one Yangon township of 800,000 people.
But stigma and families’ reluctance to go to court mean most go unreported.
A new child law is soon due to be signed and would allow police to open cases even if nobody presses charges.
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© Agence France-Presse
