Back when Clinton was president there were a rash of dozens of supposedly deliberate black church burnings. USA Today did an extensive analysis and long article about it; their conclusion was it was not a white or Republican conspiracy at all. But it definitely was mentioned in a lot of Democrat fundraising emails, and got a lot of air time on the networks.
Of course now this couldn’t happen. USA Today is far too far left to publish an honest assessment.
If I remember correctly, Clinton claimed to remember church burnings in Arkansas. A quick look at that time period showed almost no church arsons in Arkansas at that time.