Comic Strips

Your analysis is simply wrong. Nobody find finds the Black Lives Matter slogan offensive. It's criticized because it's it's too vague, not because it's provocative. The reason why conservatives latched on to the slogan specifically is precisely because the underlying point is valid and true. Regardless of how you personally see it, there are a lot of people out there who came to different conclusions as to what this slogan means. Many saw it to mean that black lives matter more or that other lives matter less. This different interpretation led a lot of people who would otherwise agree with the core cause to disassociate with the movement. This difference in support is key to any social movement as it defines a movement gaining enough support to achieve real change vs not. Optics matter.

You brought up the point that movements need to be offensive to get anywhere, but that's not true. Social movements like this don't need a "shock" factor in their optics. The videos of police brutality and the disproportionate statistics do that for the movement. They're literally why the movement exists in the first place. The civil rights movement already demonstrates that this strategy is not effective or necessary. The same goes for the suffragette movement actually, and the LGBT movement as well.

This idea that social movements can get anywhere by simply demanding stuff is nonsense. All social movements require the support of the public to achieve anything. The suffragette movement campaigned to gain the favor of men, the civil rights did the same with white people, and so did the LGBT movement with straight people. Without the support of these demographics, their rights would've never been voted into place. All these movements were deliberate about their messaging, slogans, and optics. They didn't try to shock people with their slogans, they wanted to convince people that they deserved their rights and they did so that appealed to everyone.