Thomas Sowell: Every election year there are great alarms in the media that not enough Americans vote. Supposedly this shows that there is something wrong at the core of our society. In reality, societies where different groups are at each other’s throats often have high voter turnout, as each fears the worst if some other group gains political power.

Polarization is a high price to pay for high voter turnout. But efforts are already underway to scare old people that their Social Security is threatened, in order to get out their vote, when in fact nobody in his right mind is going to touch their Social Security.

It is young people who are more likely to find that their promised pensions are not there when they get old — unless they get some private pension in the meantime, with or without privatization of Social Security.

Since 90 percent of the black vote goes to Democrats, it is especially important for Democrats to scare blacks, in order to get a large turnout. Charges of “racism” have been used for this purpose in the past but it is hard to make that stick against an administration with the first black Secretary of State and the first black National Security Adviser in the White House.

The ploy this time is to claim that Republicans are trying to “suppress” the black vote “again.” Senator Kerry has stooped to this, despite the fact that many of the voting booth problems in Florida in 2000 occurred in precincts controlled by election officials who were Democrats.

Other uses of polarization to increase voter turnout include Senator John Edwards’ claim that there are “two Americas” and the old familiar line about “tax cuts for the rich.”

Whatever the effectiveness of polarization in boosting turnout for Democrats, the larger question is: What is its effect on the country as a whole — and not just during election years? A country whose people see each other as enemies is in big trouble, often in bigger trouble than its worst enemies can make.