Staff were soaked with water bombs, washing-up liquid was squirted into the eyes of one teacher, and the head's office was "trashed", she said.

BBC: Black teacher assaulted and 'racially abused', court told

President Thein Sein's office said in a statement that police had used water cannon, tear gas and smoke bombs to disperse the crowds.

BBC: Burmese police break up copper mine protest

It's the same kind of trade-off TSA implicitly provided when it ordered us to take off our sneakers (to stop shoe bombs) and to chuck our water bottles (to prevent liquid explosives).

WSJ: Noah Shachtman: Has Airport Security Gone Too Far?

Police said officers were attacked with petrol bombs and stones at the east Belfast interface and in response they used water cannon "due to the extent of the disorder".

BBC: Union flag dispute: Riot breaks out in east Belfast