[simple-thoughts]

A good place to start would be with this text on Rothbard’s leftism, which connects ideas you may already familiar regarding libertarianism with leftism: https://cdn.mises.org/19_1_2.pdf

However the roots go much deeper. Nozick himself was advancing the progressive tradition. One way to understand it is to start by considering how the state was the tool leftist had used through the 19th century to advance individual human rights. Once the state had become totalizing in the way all modern capitalist countries are today, the only way forward to advance human rights further must involve the dissolution of the state since oppression is no longer caused by traditional social mores but rather by the system that replaced those. That’s why you often see weird alliances between rightists and libertarians: the few remnants of reactionary resistance against the state allied with what is at core a radical progressive movement. Leftists are a more natural ally with libertarians but cannot support libertarians as leftist power flows from state authority.

There’s also a more specific history of libertarian plus leftist conference and other collaborations but I’m not knowledgeable on the details, merely that the info is there if you search for it.

[FabHK]

While Nozick was not traditionally right-wing, he was arguing for a pretty minimal state that’s not compatible with left, liberal, progressive ideas.

[simple-thoughts]

Minimal state is absolutely compatible with leftist philosophy! Anarchism itself is a leftist movement. What’s incompatible isn’t ideology, its praxis. Mainstream leftist movements rely on state power to further their goals. That said there’s still a ton of great leftist movements today that attempt to sidestep statism.