And the abortion rights group NARAL Pro-Choice America has begun airing television ads that accuses Roberts of siding with violent extremists and a convicted clinic bomber while serving in the solicitor general’s office. The ad focuses on Roberts’s role in a case involving whether a 19th-century anti-Ku Klux Klan statute could be used to shut down blockades of health clinics by abortion protesters. The solicitor general’s office–where Roberts worked — filed a friend-of-the-court brief siding with the clinic protesters, including Operation Rescue. Backers of Roberts have accused NARAL of distorting the nominee’s record.