175 years ago, Karl Marx struggled to prevent adventurism and idealism from splitting and wrecking the world’s first communist party. Today, the Western “left” faces similar dilemmas as the failed strategy of entryism continues to dominate discourse as a barrier to movement building. In this video, we look at the history of entryism in the USA - from the Great Depression campaign of Upton Sinclair to Michael Harrington’s conception of “realignment” to the modern populism of candidates like Graham Platner.