Why are Republicans always trying to use the "radical Left" as the boogeyman and painting the entirety of the Democratic party with it? Gingrich knows full well that there are marginal voices on the far left just as there are on the far right. Why are Republicans always painting with such a broad brush and not supporting their arguments with actual facts?

I'm curious just which specific things Gingerich thinks they're doing that will make us "less free" or "less safe"? For comparison, maybe we should look at decades of "trickle down economics" and see if those work? I suspect Gingrich and Miller would say yes, but mountains of evidence indicate we're not measurably better off. (See also: http://eprints.lse.ac.uk/107919/1/Hope_economic_consequences_of_major_tax_cuts_published.pdf)