In all fairness, while there have been many race-based attacks by racist blacks, from what little is presented in the excerpt, this sounds more like a typical robbery than a racist attack.
But remember why was she targeted for the robbery. Old , white and easy resistance free. That’s every bit racial.
I think too that this is nothing different then what this type has been doing for the last 30 years or more. The Trayvon references are just todays justification if and when they use it.