Just to be clear, I suggested she had multiple drug-related felonies on her record. The most recent of those is 2009, so there's no evidence to suggest the Huffpost explanation of traffic citations is incorrect. I imagine an officer arresting a felon on outstanding warrants (even for a non-felony) is going to probably use an extra level of caution.
I'm still inclined to give the officer the benefit of the doubt.
There are cases where I haven't given the officers the benefit of the doubt.
This case, for example, is pretty obviously bad:
http://www.courthousenews.com/2010/06/24/28330.htm