Judge Hears Dispute over Expert Testimony as Prosecutor Questions Defense Witness with Expunged Record
In San Francisco Superior Court, Deputy District Attorney John Robles sought to challenge the credibility of Deputy Public Defender Tatiana Howard’s expert witness, Katherine O’Bryant, by introducing evidence related to an expunged 2006 criminal case, a development that occurred after a prosecution expert, Officer Smith, testified that 75% to 80% of those involved in drug dealing in the Tenderloin were Honduran.