Liberalism in it's traditional sense is something which should be promoted around the world. It leads to mental enlightenment and intellectual advancements. Look at the Islamic world for instance, it's the liberal thinkers (such as Raif Badawi and Malala Yousafzai) who are pushing for equality, freedom and education while the conservative establishment wishes to keep the people ignorant.
In these cases, I'm sure we can all agree that liberal politics should be supported.
However, the western world has recently seen a new type of liberalism which seems to be more about naive and often delusional student politics, than a sincere belief in the core values of liberal politics.