Hanging people is considered cruel and inhumane by most reasonable individuals, and that’s one reason its no longer a method of execution used by the state.
Additionally, there’s deep seated historical context with hangings when it comes to people of African descent in this country; aside from being an atrocious act of racism, it was psychological terrorism, meant to intimidate us darkies into knowing and staying “in our place.”
Someone would have to be unbelievably, even willfully obtuse to miss the negative connotation that is automatically associated with hangings and Black people.