Because they don't want 'improved relations', they want police disbanded, their whole purpose is to exacerbate and create chaos.
The Oakland chapter of Black Lives Matter has declined an invitation to participate in a barbecue with the local police department, with one protester explaining, "I eat pigs, I don't eat with them."
The department came up with the idea after a similar cookout in Wichita, Kansas, met with success on Tuesday. That event replaced a planned protest after police officials proposed the idea.