How would the cops stop them? If everyone has class consciousness at the same time, they can just all refuse to work at the same time and overwhelm the cops. The cops may be considered a separate class, but aren’t a separate entity from society and would quickly feel the effects of everyone turning against them. Even the US 2020 protests had a lot of cops quitting, in spite of it being a fraction of the populace organizing to protest police brutality, specifically, without even necessarily having class consciousness as the backbone of it.

I would venture to say one of the reasons organizing a vanguard is necessary is precisely because it’s so unrealistic to have everyone class conscious at the same time as a precursor to revolution. There is also outside repression too, so if you only had one people/nation class conscious, but not the whole world, then you could still have them violently repressed by outside forces anyway if they have no vanguard. But if we’re hypothesizing everyone the world over being class conscious at the same time, the only way I see repression working for long is if we’re supposing that class consciousness can be undone in this scenario, with violence enough that people cave. Otherwise, I’d think we’re talking about little more than a countdown until the capitalists are overwhelmed, with the worst case scenario for the working class being that the capitalists have a literal fortress to hide themselves in for a while - but even then, there wouldn’t be a whole lot they can rule over from hiding if nobody believes in the system they’re pedaling and understands that the liberation of the working class is more important and valuable to getting everyone’s needs met than any single person being immediately comfortable in the short-term. I’d think we’re talking about a level of belief and understanding that bypasses what could put many off of taking part in revolutionary struggle. Which is unrealistic in part because for many, their overriding concern is going to be when they get to eat next, and they’ll have limited patience for supposed sacrifice to make that better world over existing appearance of guarantees that the current system gives them in this way. And for some them, depending on where they land in money and such, it might be closer to a guarantee while the system lasts, even if it comes from an unsustainable system. So this is where the logistics come in, of being so critical to be capable of replacing the existing system with one that can get people’s immediate needs met, otherwise many will perceive it as a loss, even if it’s technically more “freeing” in the long-term. Along with just the humanitarian concerns, of course, of the point being to improve conditions for people.

Ultimately, I think the hypothetical can be an interesting jumping off point for getting into what it really means for people to be class conscious or not, but in practice, it’s sort of like asking, “What if a moving train suddenly became an airplane?” The consciousness for many is so tied up in their day to day capitalist living, it’s never only a matter of teaching them class consciousness, but also the maintenance of it against the inertia of the existing system and its propaganda and persuasion through how the structure of daily life informs people’s worldview. No one remains in a static state, in other words, and instead is always shifting in relation to internal and external forces.