Sakai isn't the only nor even close to the best analyst of settler Colonialism, but he's the boogyman for settlers.
Revolutionary defeatism for Americans means bringing about the destruction of the American settler colony.
I'm saying we should address internal Imperialism, by focusing on working for the internal decolonial movement lead by the colonized nations. I said the Americans have never defeated their outward Imperialism. It has always been defeated by their victims themselves. This begs the question of why they are ineffective at defeating external imperialism? Because they fail to analyze their own inward imperialism as society that enables the outward Imperialism.
Think about how the US sanctions have been targeted at oil states like Russia, Venezuela, Iraq, and Libya, our internal colonization of oil extraction was accelerated by Bush and Obama which allowed us assault these nations. Which is more effective? RAWM like protests or the struggle by the internal colonies against the extractive industries? Dollar dominance from controlling oil prices allows the US to keep developing countries in a dependency trap. America's wealth is here, extracted here. Pull the weed by the roots.
RAWM does nothing and half of that "movement" was made of China Hawks. It's good to advance such positions, but most effective when tied to anti-colonial solutions which can actually solve the problem.
Learn what wars subjugated the tribes that inhabited your home town. Learn how they were removed and how the American workers were involved. Learn where they are now and what they have to say about the current environment. Even if they are not Marxists, they know more about American Imperialism than you do. They live it every day. Their natural inclinations are closer to reality than the average settler Communist's theories, who doesn't even know their name.