I have to disagree in a way, more to add than detract. Any ethnic group which identifies with liberals is subject to the group think paradigm. It is rare to see any creative, individual thinking coming from liberals. They tend to rely on talking points more than their own brains.
That is true, and the reason is that modern "liberalism" is a collectivist ideology. The individual is simply not valued, and each life is held to gain meaning only as a member of a group or tribe, loyalty to which is demanded as a condition of acceptance. By extension, all personal rights and privileges in the collective are held to come not from nature or from God, but rather from an external and central grant of authority; i.e., from government, from the State.
In all collectivist societies, there is nothing personal that is not also political. One's sphere of liberty, whether in thought, expression or action, is always subject to control whenever it is seen to conflict with the needs and desires of the group. While such a system of societal organization and government has been foreign to America since its founding, one can now see it routinely among explicitly left-wing sociopolitical organizations, such as the mainstream news media, Academia, and yes, in certain ethnic groups.
Increasingly, for those who dare assert individual liberty and differing viewpoints, no discussion is allowed. Instead, they are routinely shunned, shouted down, punished, degraded and worse.