Because you know that's why he thought it was OK to go there even tho he has a DWI.
A DWI is pretty much the only socially acceptable criminal conviction a person can have. It's the one crime where the racial and socio-economic make up of people arrested more closely matches the actual population.
Consider Ethan Couch in Texas who was sentenced to probation in a case where he killed four people and injured nine.
Even residue of crack cocaine in what is called a "stem" - an instrument used to push cocaine into a pipe - is enough for an arrest and conviction.
If you can't get him on the big stuff, it's a way of associating a rich White guy with Blackness and criminality.