英文關鍵字
adult
authority
background
baton
car
city
close
closing
control
crime
crowd
culture
demonstration
doors
enforcement
europe
evening
girl
guy
illegal
light
lovers
man
motion
moving
night
officer
people
person
police
political
protection
protest
rally
relationship
riot
security
society
spiritual
steel
street
subway
teaching
transport
transportation
travel
uniform
unrest
urban
vehicle
violence
walk
work