Hundreds of Singaporeans angered by the walkover victory of their first female president held a silent sit-in in a park today in a rare political protest denouncing the lack of an election. <br/><br/>Halimah Yacob, a former speaker of parliament from the Malay Muslim minority, was sworn in Thursday without a vote after two potential rivals were disqualified from running.<br/><br/>The protest followed outrage on social media over what critics say was the engineered victory of an establishment figure. While the role is largely ceremonial, the president has veto powers on key government appointments and safeguards the country's substantial financial reserves.'<br/><br/>Social activist Gilbert Goh, who organised the protest, said it was to highlight the sense of betrayal Singaporeans felt after being robbed of a chance to vote in their head of state.