It isn’t the guns that would turn Jesus off to America. It is the 55 million dead babies and glorification of rampant hedonism not just in the entertainment industry (seeking to make money off of sex) but also in our schools and civic functions and corporations. So ‘tolerant’ of slutty gay rights marches.
The abandonment of the religious tradition among the masses. The mocking of what many hold sacred.
Those characteristics of our society are analogous to the characteristics of the society that he came into 2000 years ago.