Saw This Being Reported In Various Places

Mexican national killed by Grapevine police had aggrav DWI 3 months ago in Lewisville @wfaachannel8 pic.twitter.com/oNlb6HUZLP
— Todd Unger (@ToddWFAA8) March 4, 2015

I've got a question: What difference does it make?

(And I think I know what he means -- misdemeanor penalties can greater if the alcohol concentration is greater than .15 , but I've never heard of the term "aggravated" DWI.)