We don't hate blacks. The Lord has a plan for and order of preaching the gospel: 1. The gentiles, 2. Jews, 3. The rest. All things done in order.
Now, you accuse the members of the Church for hating blacks due to your interpretation of the actions of the past. In the same vein, therefore, you could accuse us (current citizens of the United States) as haters of blacks due to slavery in our early history.
Here is the witness of a current black member, and a former player in the NBA (Thurl Bailey):
“His smile was contagious,” Thurl said. I asked him why blacks couldn’t hold the priesthood for all those years, and his smile just got bigger. ‘Father in Heaven wants me to answer you this way,’ he told me. ‘Thurl, it wasn’t time. The blacks weren’t ready. The whites weren’t ready. We’re mortals. We’re not perfect. But you need to know the gospel is perfect.’
“For some reason, that opened something up in me,” Thurl said. “I called my wife. ‘I’m gonna be baptized,’ I said. We cried long distance. It was a very expensive cry, I might add. My decision to give up what I’d been used to in the NBA in exchange for something that didn’t look like much” (playing on Italy’s basketball team) led to the biggest decision of Thurl’s life.
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link to www.meridianmagazine.com]
So yes, unfortunately racism was ingrained (and still is, sadly) between blacks and whites, and it wasn't until after the Civil Rights movement that things could progress. Now the church is expanding in Africa so quickly that the church would not be able to keep up with it if it had started early on to preach in Africa. Remember, our human minds are limited and God's thoughts aren't our thoughts:
Isaiah 55.8: For my thoughts are not your thoughts, neither are your ways my ways, saith the Lord.