 The group said they are worried about the mindset of Harris County leaders after learning Thomas sent that e-mail and finding out about racist e-mails sent by District Attorney Chuck Rosenthal.On February 15, 2008, a lawsuit was filed calling for the removal from office of Thomas, as well as District Attorney Chuck Rosenthal, who resigned almost immediately.The sheriff's office is under investigation for the surveillance of two brothers who successfully sued Harris County for civil rights violations.