There's been a critique of liberalism (classical) for a long time that its high tolerance makes it vulnerable to being taken over by intolerant subgroups. That's what we're seeing lately with modern leftism. 

Like you say, most of us like a liberal culture, but I'm increasingly concerned that it's inherently unstable. I use to be very dismissive of that criticism.

Undisciplined

FiresidePhilosophy

Culture and Choice by plebpoet on Thriller Bitcoin \ stacker news ~bitcoin

I do think liberal culture is at a crossroads. On one hand you have classic liberalism that I think we all support and on the other hand you have this modern leftism that I feel is filling the void of religion where people think they are saving the oppressed, the planet, etc but are just acting as mercenaries for state accretion of power because the end state which they seek (equal distribution of everything) can only be obtained by top down force. 

And we know where that leads and it ain't very liberal. 