Jim Newell puts the Pelosi vs. AOC-et-al conflict in context:

House Democrats have control over one body of Congress, while Republicans control both the Senate and the White House. This means they’re going to lose fights, including fights over issues that have captured and animated their base. That the main progressive and moderate blocs are at each other’s throats, while the most famous individual progressives and the speaker fight in public after the first big loss, does not instill great confidence about their ability to digest those losses yet to come.