Why does it suggest liberals are scared of this?

Because OP wants to straw-man for clout.

Aren’t they okay with Projects for affordable housing?

Yes, an overwhelming majority of liberals are in favor of that.

So liberals aren’t communists?

No. Also I'm not sure why you're asking this question.

Then, why are the red hat clowns so grumpy?

I'm also not sure why you're asking this, but:

Red hats will get grumpy about virtually anything because it helps motivate their perpetually angry and afraid base; one of the defining segments of the deeply conservative mindset is that potent mix of fear and anger.