An ill wind is blowing in Hong Kong that threatens to add a whole new dimension to the ugly side of the civil unrest that has been plaguing this city for well over four months now.I’m talking about the targeting of ethnic minority groups, easily visible South Asians in particular, as those who have subverted the anti-government protest movement with venom and violence look for more victims and scapegoats.It’s bad enough that extreme resentment against Beijing is regularly misdirected at…