Generally speaking, only left leaning speakers are allowed on campuses.
Generally speaking, only pro-immigration speech is allowed in polite company.
This story, at least to me, also illustrates Chinese immigrants aren't interested in immigrating to other countries because they like the culture, way of life, etc and are choosing them as a new home to raise their families (well, this is part of it of course), but perhaps even unbeknownst to themselves, they have a strong intention to modify their host cultures into a form more like what they are used to.