Sometimes analogies can be the key to a good argument, and sometimes they are taken from so far out in left field that you wonder if the speaker has lost all ability to make comparisons.  But in the argument over whether pharmacists should be required to carry birth control pills, this is the best I've heard:

A drugstore in Great Falls, Montana, newly acquired by a pharmacist named Stuart Anderson who is active in  the pro-life movement, has announced it will no longer fill prescriptions for oral contraceptives.
...
Jill Baker, director of education at Planned Parenthood of Montana, says the woman who could not get birth control pills at Anderson's pharmacy was "denied basic health care." This is like saying that someone who tries to buy eggs at a convenience store that doesn't stock them has been "denied basic food," or that someone who tries to check into a motel that's full has been "denied basic shelter."

And if I don't happen to blog on a particular topic, does that mean I've deprived you of basic knowledge?