House Democratic lawmakers reportedly used a closed-door meeting earlier this week to vent their frustrations with progressive advocacy groups that have been driving constituent calls and pressuring the party to act like a genuine opposition force in the face of the Trump administration’s authoritarian assault on federal agencies and key programs.
In politics we call those groups factions and ‘vocal minorities’ form the base of support.
If you want to change policy in the USA then you need to either mobilise large numbers of people or large amounts of money and I’m surprised that the top comment is someone complaining about a political party being subject to democratic forces.