Racist? Hillary is as white as vanilla pudding with a glass of milk on the side.
He is investigating Glenn Quagmire Anthony Weiner , who is a cracka-ass honky. it just so happened his not so smart estranged wife kept Hillary Email on her home systems when she testified under oath for an immunity deal that she did not, and only printed out stuff for HRC because she couldn't figure out the Fax/Printer at her office or somesuch nonsense.
Now that Huma's testimony is proven false, she is no longer immune, which is why she is no longer to be seen with Her Royal Thighness.
Anyway, Comey promised that if there was anything new to emerge, it would be brought up immediately - Clinton's top aide lied about what she was doing with the Emails for immunity. That is a "Big Effing Deal" /Biden. - regardless if any of these Emails found are new, old, classified, or somehow related to Yoga, Yogurt, or Yogi Bear. - Clinton, Obama, and Lynch are tangentially related to all of this at best until these new Emails are gone through. So no, not racist - just following though as he declared he would on record during an investigation.
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Above, Anthony Weiner.