It is odd how the perspective of the article finds discriminating on behaviour so incredibly difficult as to be unfeasible as a solution, so discrimination on race is therefore justified. It sounds to me so remarkably similar to the justifications I saw of anti-Aboriginal discrimination in Alice Springs this year ('well, some of them behave badly, and threaten the business by upsetting people and leaving cleaning bills, so we have to not allow any of them to stay based on race').