What was unclear about “stop killing black people or anyone else just because you have a badge!”?

Protests can be highly effective if you follow the proper procedures, set a time and place that is well publicized, apply for the proper permits, coordinate with local authorities, stay within the allotted boundaries making sure not to overcrowd the area, do not disrupt traffic or commerce, do not intimidate the peacekeeping agents placed there to protect you, and please do not damage the provided velvet ropes or barricades