Yes, there is a point in the CNN composition where someone off camera says that, and it very well may have been an ”All Lives Matter” protestor, but excuse me if I need real verification. Maybe you can post a trustworthy version that acutally shows this? What I did hear and see them say was “All lives matter,” and “Blue lives matter.”
Black Lives Matter folk say, “All lives don’t matter until black lives matter.” That can be taken the wrong way. Those saying, “All lives matter,” include police lives.
Saying, “Black lives matter to no one,” does not fit the premise of “all.” Also, it would be terrible, because they do matter to a great many people, just not to many blacks, including ones active in these “George Floyd” protests, which is why the BLM movement is such a sham, clearly offensive and racist. However, it's not a good idea to counter that with the same sort of thing.