The white guy who subdued the enword most likely was a former military/solider or policeman. Most whites are too cowardly, self interested or just untrained to intervene like that.
Whites (including jews) must be trained in self defense, guns, and general urban enword defense. It's awful that synagogues and religious schools don't offer defense training to jewish kids, who will need it as america becomes more third world and therefore more hostile to jews.