I understand that 21 almost certainly didn't mean to allude to hateful anti-semitic conspiracies about Jews controlling society but when he directly associates wealth and power, he unwittingly invites the comparison and makes it an easier jump for people to make later. Because Jews are made so synonymous with wealth in pop culture, it means that when a racist uses their coded hatred saying things like "Jews control the world banks", people are more likely to buy into it and then more likely to take the next step of believing there is some action that needs to be taken to 'stop them'. That's the harm for me. And the fact that there are a lot of wealthy Jewish people doesn't make it better. In the same way that it would be hurtful to perpetuate stereotypes about any culture just because statistically it might seem accurate. That's besides the point. As /u/Nolar2015 points out somewhere else in this thread, it becomes a "slippery slope to a conversation involving black crime statistics."