Police shall keep order on public streets, etc.

It is the duty of the police to keep order on streets, public roads, thoroughfares, landing places and ferries and places of public traffic and to remove obstructions to passage on streets and public roads at the time of assemblies and processions or in the neighbourhood of places of worship at the time of public worship or at any other occasion when a large number of people assemble on any street or public road, or thoroughfare or landing place or ferry or where the passage is obstructed.