The USCCB has put together a whole bunch of age appropriate, faith based activities arranged by topic and age. You can check them out here.
The New York Times has also put together a list of recommended age appropriate books on helping parents talk to their kids about race, racism, and protests. It can be found here
The University of Pennsylvania Graduate School of Education has a guide for talking with children about racism and racial incidents found here
Books For Littles has put together a guide called "Anti-Racism For Kids 101: Starting To Talk About Race" that has age appropriate book recommendations and tips found here.