Jesus is Jewish, but whites separate him from being Jewish. An example is their history of antisemitism. Logic would state if Jesus was Jewish, how could you hate Jews. Jesus being pictured as white was used to unite the white race around one common cause. It was done to give whites a belief that would support them trying to rule the world. The people who gave the belief to whites did not give them all of the knowledge. They just wanted to use the whites, so they could control the world. Read the myth of Golem, which is a Jewish legend. They also allude to this in the movie Superman.
anti-semitism is usually confused with freemasonry and the banking system (which is predominantly Jewish). It has almost nothing to do with 'jews killing christ'.
As well, you need to stop obsessing about white people and their attitudes and how it has power over your whole life. I've seen black Jesus figures too, as well as hispanic ones, no big deal. It's simply a matter of the regional culture.