A Liberal should be open to giving multiple viewpoints fair consideration.
When I was in college, in the aftermath of Dukakis being derided for being a “Liberal,” one article offered this sentiment in a set of pro-Liberal points that it declared should have been in Dukakis’ response.
To me, a Liberal is, by necessity, a person of compromise. If you truly consider multiple viewpoints fairly, it is unlikely you will find your original view the only one with merit.