Our National UCC is doing amazing work in so many ways. One resource they provide on their website is a series of webinars called Worship and Care for the Entire Church, at https://www.youtube.com/user/uccvideos.
Among the series are several great videos focusing on different parts of the fight for Racial Justice.
One that has been recommended by Mary Ellen Smith and Nancy Hannah is called Organize the Church: Voter Registration, Education, and Mobilization. Click the title and see for yourself!