I found this on Bobafett81's blog, via Tomorrow. The bear was campaigning for ethical treatment of animals. It was questioned by Singapore police officers, and then arrested and escorted into a police van and taken away.
God save the bears, indeed. Especially the nice, kindly ones with a sense of humour, which are just trying to speak up to make the world a slightly better place for all animals.
Possible criminal charges faced by the bear - being a nuisance in a public place; providing public entertainment without a licence; and attempted criminal intimidation of the President (the bear was standing outside the gates of the Istana; the President was nowhere around, but hey this is Singapore, so the charge might work anyway).