riot?

Have you noticed there are more road blocks than usual in your neighbourhood? And the policemen are there 24/7 with 3 patrol cars. We saw 2 road blocks on the way home from Penang. One at the main road junction and the other block at the road we usually take to go home. At first, we thought they would only be there for half a day or so, but we still saw them this morning on the way to work. There is going to be a riot again? Should we start stocking up food in the house?