11.   The activists threw stones and sticks at armed police, and later tried to break through a security barricade.

n. + barricade >>共 63
police 46.55%
tire 9.46%
barbed-wire 7.42%
steel 4.09%
road 3.07%
cement 2.81%
iron 2.81%
security 2.81%
sandbag 1.28%
army 1.02%
security + n. >>共 445
force 16.92%
official 8.09%
measure 3.87%
service 2.70%
concern 2.53%
source 2.32%
reason 2.31%
officer 2.29%
firm 2.22%
issue 1.82%
barricade 0.02%
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