I'm sure that some of the 'rants' are not obscenity filled. Some of us feel the exorbitant taxes we pay gives us a 'right' to complain to our government. The DHS is directly responsible for stopping the roundups in San Diego, so the DHS will get my complaints directly.
That "some" is a small minority, according to people I've talked to who are in the know, and that tallies with my own experience. There is something about shock-jock directed "telephone activism" that encourages people to use Mr. Carlin's Seven Words to excess.