Liberals are far more inclined to see graffiti as a mere nuisance, or even as an example of the downtrodden trying to have a voice in a civilization that oppresses young people who are usually members of historically oppressed minorities.

To the conservative, graffiti is an assault on civilization; to the liberal, graffiti is the result of civilization's assault on those who paint the graffiti.

For those who share Sullivan's political and social values, the notion that someone would defend a man who shot and wounded graffiti vandals defacing his property is worthy of derision. Sullivan is so sure his readers have contempt for such a view that he felt it unnecessary to offer a word of commentary on what I said.

That is unfortunate. I would be interested to know how Sullivan regards taggers and what he would suggest be done to them if caught in the act of defacing property. Since most people suspect that calling the police would achieve little, if anything, what should be done?

My first wish is that taggers be arrested and punished. I also wish for world peace and a cure for cancer. But the real-life choice is almost always between taggers getting away with their vandalism and an irate citizen taking action. Given the destructive nature of tagging -- the moment one sees graffiti, one knows one has entered a largely lawless and violent environment where thugs terrorize innocents -- I prefer something, even if violent, rather than nothing be done.

I have no desire to see a graffiti vandal killed -- my position has always been that only those who cause death deserve death (that is why I oppose the death penalty for any crime except murder). But if enough taggers are wounded, their assault on civilization will decline dramatically. And if one accidentally dies? That would be a tragedy. But here is the bottom line: More innocent people will die if tagging is not stopped than if it is. Graffiti unchecked leads to worse crime.

Those who deface private and public property are not otherwise decent kids who are oppressed and not allowed any other form of self-expression. My sense is that the vast majority of graffiti vandals are headed toward, if not already involved in, a life of sociopathology, including violence.

Indeed, increasingly those graffiti vandals do engage in violence. Citizens who so much as flash their headlights or yell at them to stop have been shot and sometimes murdered.

As in so many other areas, with regard to taggers, right and left see life through opposing moral prisms. On the left, the tagger is viewed as society's victim; on the right, society is viewed as the tagger's victim.