Look at the definition of "liberal" in the
dictionary:
1) favorable to progress or reform, as in political or religious affairs.
2) noting or pertaining to a political party advocating measures of progressive political reform.
3) of, pertaining to, based on, or advocating liberalism, especially the freedom of the individual and governmental guarantees of individual rights and liberties.
4) favorable to or in accord with concepts of maximum individual freedom possible, especially as guaranteed by law and secured by governmental protection of civil liberties.
5) favoring or permitting freedom of action, especially with respect to matters of personal belief or expression: a liberal policy toward dissident artists and writers.