Daveed Diggs and Rafael Casal at the Philadelphia Film Festival Springfest preview screening of “Blindspotting.” Daveed Diggs and Rafael Casal Shining a Light on Our Blindspots by Jay S. Jacobs For Daveed Diggs and Rafael Casal, it all goes back to Oakland. That was where they grew up, where they first met as kids and became life-long friends. Now, all these years later, long after both of them have moved away, Oakland has become the site, the subject and a virtual character