Police say five people were arrested for tagging RTD, police and personal vehicles. The protestors also threw paint balls and balloons full of urine.
The group was using a tactic called black bloc, wearing black clothing and ski masks to conceal their identities.
The protestors forced the mall shuttle to shut down on the first night of Denver Restaurant Week.
Police say the protests started about 7:30 p.m. and had ended by 9 p.m.
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