Everything done by the United States government before Trump was done under the liberal ideology. They’ve justified slavery and social security, the United Nations and support for military dictatorships, ethnic cleansing and the right to vote, all from valid use of that contradictory ideology. It’s filled with amazing ideas and terrible ideas that are all at war with one another.
The major problem with it for lemmy users is how much liberals support capitalism and imperialism. Both of these things are the source of most of our biggest problems, and liberals consistently fail to restrain themselves.