A zit is a wispy duct that engorged with pimple germs. Soon it's a maraschino cherry size blemish right on the puss.
Old Loughner, with a freshly shaved head and maniac smile, looked like a big zit in the newspaper. People have been spouting off like Mount Saint Helen's about the shooting rampage, characterizing it however best scratches the self-expressive itch. As a concerned citizen I feel everyone should, in his or her own way, try to squeeze the zit out of existence.
If only it was so easy. There's always something gross left on your face when you pop a pimple. Passivity. Best option.