The Public Order Act regulates the organization and participation in public assemblies or protests, including those organized via online platforms. If an online post encourages unlawful assemblies or protests that disrupt public order, it can be considered illegal under this Act.

Source

Other Legislation from Singapore

Act on Cybercrime/Online Intellectual Property Protection

Cooperation and International Efforts

Criminal Code/Law Enforcement

Cybersecurity and Critical Infrastructure Protection

Data Protection and Privacy

Online Hate Speech and Illegal Content