1.   One protester is ramming a long plank through a side window, another protester is brandishing a pipe, ready to strike.

2.   After returning to Seoul, the protesters briefly fought with police, throwing stones and brandishing metal pipes, before entering the Sungkyunkwan University campus.

3.   They also wore white gloves and brandished pipes.

4.   Groups of officers in riot gear chased demonstrators through clouds of tear gas, and Yonhap said the protesters brandished iron pipes.

5.   At one point, hundreds of students and residents brandished iron pipes in vicious fighting around piles of burning tyres.

6.   The students brandished steel pipes, knocking down dozens of troopers, and smashed police buses before fleeing deeper into side streets and alleys.