The International Network of Children's Ministry has long been one of the best organizations for training, resourcing and connecting kids ministry leaders.
They have recently put together a page of the top resources for Kids ministry Leaders on racism, reconciliation, diversity, and inclusion. This is what they have to say:
Because children’s ministry has the opportunity to shape the future of the Church, this weighty responsibility requires that we fully embody our roles as ambassadors of the message of reconciliation (1 Cor. 5:11-21). We have a great responsibility to reflect the heart of God as a diverse community of disciples, and also as leaders of kids and families.
INCM exists to connect you to what you need to champion the discipleship of kids and families. This page of curated resources has been designed to specifically connect you to thoughtful, valuable tools for nurturing Kingdom wholeness in our own lives and ministries. This page will be updated regularly with additional resources, and is organized by topic and recommended audience (though some could fit in numerous categories).