We have to move the argument to “this is an illegal business”. The Right is an amalgamation of extreme Libertarianism and race-centric Nationalism currently, and making a persuasive argument to them requires breaking everything they think they know about what is “good” in the world.
I say this with respect to actually politically reshaping the discourse dynamic (it has to start at debate).
The Right is the obstacle to solving this, not the Left. This is not a universal issue, it’s only a universal issue for people to politely agree and get along, but all actionable items are against the ideology of the Right. To put it simply, to get to where we need to get, we have to chisel and whither away their narratives and mindshare in debate, they skate freely on this topic. Their stance and narrative actually have no place in a problem-solving environment (we can’t solve it if the underlying ideology holds free markets paramount, over humanity).