Has anyone Ever heard of a Black police officer shooting an unarmed white male during a confrontation?

I am Just wondering if this has ever Happen in America. I do Know of many cases where Black males have been confronted by white Police Officers and been shot to death and no Gun or other weapon has been found. No white Male police Officers have been convicted and put in Jail of this Either. I ask this because I have Teenage Black male Son and I fear for his life.After reading the Pace university Story and the Sean Bell Story and The Amado Diallo Story and literally remembering dozens more shootings of Black Males By White police officers. I even remeber two times Black off duty Police Officers Getting Shot by White Male Police