The media is totally lying about what happened at this rally. Police and the BLM activist mayor appear to have conspired together to provoke conflict at this event rather than prevent it.
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Below is three interviews with people who were there, all of whom describe how police led the right-wing rally-goers through a sea of antifa to be maced and attacked.
The police then shut the rally down immediately despite their having a permit, then let the counter-protesters who did not a have a permit run wild in the streets.
This is looking more and more like a setup all the way....
http://redstatenation.com/driver-car-killed-counter-protester-james-alex-fields/
So from the looks of it whomever is in control of the police set it up so they would not interfere in the fighting until they were ordered to. No indication when or if they were ever ordered to!
Another set up here.