So imagine conservatives are out there telling each other:
First they gave women rights, and I did nothing.
Then they gave black people rights, and I did nothing.
Then Obama gave consenting adults the right to get married, and I did nothing.
Then Hillary gave trans people rights, and I did nothing.
Then QAnon told me I needed to act—and there was no one left to bully.
After trans people, who's next on the basic human right's agenda?
Limited liberal rights aren't even basic human rights, so I'd push back on even considering any of those other examples as being something that's done.
To be honest, I think liberals will say they're done, there are no more frontiers, they did it and you should thank them for it.
In reality, it's all of the same frontiers we've been organizing around forever. I would personally say that I'd want to see a left-driven anti-imperialist push, since liberals don't consider most people overseas to have human rights like not getting murdered through bombings and the destruction of civilian infrastructure. But I don't think liberals can actually concede on that domain. To concede on it you'd have to stop being liberal, it's a direct threat to the entire economic model of the West and propaganda would be turned up to 11.