As of an hour ago...
Garrett Foster was pushing his fiancée's wheelchair when he was shot dead by someone in a car.
www.bbc.com
Garrett Foster was pushing his fiancée's wheelchair at the protest when a car drove into the crowd, his mother Sheila Foster told US media.
As demonstrators approached the car, someone inside the vehicle opened fire on the group.
Mr Foster was taken to hospital, but was pronounced dead shortly afterwards. Police have arrested a suspect.
This does not sound like what the OP is presenting.