Ian Wright , others and professional football players may understand the difference but it escapes me . When exactly did the meme start ? Genuinely interested to learn
The Black Lives Matter hashtag came to prominence after the acquittal of Trayvon Martin's killer. That was about 7 years ago. Since then a large network of activists and groups have united behind the slogan. It's a movement, not a single organisation. No single group owns the rights to the slogan or wields power over the global movement.
Happy to be corrected but the above is true to the best if my knowledge.