How does the police department use  a "...Taser on people in the crowd..." and not arrest or provide assistance to the person or persons tased? 

I suspect they threatened the crowd with tasers. 

I've seen one crowd video. It appears the police are either poorly trained or poorly equipped for dealing with difficult to control arrestees. 

They appear wonderfully well trained in dealing with a hostile crowd of sniveling idiots begging for a reason to riot.