Evangelical history includes positively many voices for justice and pioneers of abolitionism, such as William Wilberforce, but also negatively those who assimilated the values of their surrounding unjust culture. Yet the basis of evangelical faith is Scripture, climaxing in the good news of Jesus Christ.
We need to listen to the voices of BAME Christians and to allow them to speak for themselves and not explain away their experiences.
As a black person, I struggle with the continued fascination with and fetishization of black children in Africa, but the lack of interest in black children suffering in the UK.
Being black in a white majority church can be a bit like the first day of a new school on repeat. Your natural insecurities come to the surface. Will I be included? Will I be noticed? How do I connect with the popular people? How do I fit in? Will my contributions be valued? Conversations feel like hard work and at times even painful without the ease of shared histories and friendships.
God is at work around the world, building his church and calling people from everywhere to be involved in the work of cross-cultural mission. If your agency can see no further than mobilising Brits for mission work, then, frankly, you are out of step with what God is doing. You might want to consider shutting up shop.