Both sides had refused to budge and a spokeswoman at the scene said 10 people were briefly held in custody before being released. Demonstrators initially said about 15-20 people had been taken into custody.

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Pretty standard RCMP intimidation and coercive tactics.   Detain people and then release them without charge, so they can go right back to what they were doing.   What's the point?   

To get people to move when you really don't have any authority to make them move. You do however have authority to detain them for investigative purposes.  But what was being investigated?

I detest retaliatory and antagonistic actions by police who need to assert their authority at all costs to the constitution and individual rights.

Shame on the RCMP for these weak tactics.  It's no wonder public support of our national police force is at historically low levels.