There very much needs to be a split between liberalism and progressivism. Western liberalism has given us individual liberty such as the world had never seen. Progressivism seems hell bent on removing that individual liberty in favor of group politics. Western liberalism has been in large part about empowering the individual and removing power from authority, making government serve the people rather than the reverse. The entire concept that each man owns himself is a construct of Western liberalism, and to the extent that this is now enshrined in law, we have Western liberalism to thank. In stark contrast, the progressive movement is in large part focused on removing that hard-won individual liberty in favor of once again empowering government to establish arbitrary rules of behavior, "safe zones" and "hate speech", with appropriate penalties for uttering the newly profane. Western liberalism promotes tolerance; progressivism is as viciously intolerant as the Taliban.
Perhaps even worse, where Western liberalism has focused on making government the protector of the weak, progressivism concentrates on making government the protector of the approved groups. We see a terrible amount of acceptance of pedophilia within the progressive movement, for example, yet even pedophile adults are highly empowered compared to children.
In short, virtually everything good about the American left is due to the Western liberalism movement, virtually everything bad about the American left is due to the progressive movement, and virtually everything good about the American right is due to its opposition to the progressive movement. I'm not saying that the progressive movement is wholly wrong - like any popular movement, they are morally correct on a lot of issues. I am saying that we desperately need a differentiation between liberalism and progressivism on the left, much as we desperately need a differentiation between social conservatism and fiscal conservatism on the right. We have libertarianism, which is currently the closest to my own philosophy and often touted as the true successor to Western liberalism, but libertarianism is still significantly different from Western liberalism on the proper role (and therefore size and power) of government. To truly be a liberal means to expect more from government than simply benign neglect.
tl/dr: Like Moonbeam, I too am a wordy old contrarian, just more conservative and less poetic. 😀