This is Phil Ochs describing liberals in 1966
In every American community, you have varying shades of political opinion. One of the shadiest of these is the liberals. An outspoken group on many subjects. Ten degrees to the left of center in good times, ten degrees to the right of center if it affects them personally.
They haven't changed.
1966 is still modern. The liberals I'm describing go back much farther. The decleration of independence is perhaps their most famiuos work though even then things were changing