contact" three years later. It's one thing to legislate against bullying, as Ontario Premier Dalton McGuinty has done with his Safe Schools Act. It's quite another to stop kids from tormenting each other in the first place (the province has provided about $2 million annually [for] Roots of Empathy since 2009). The moneymen behind the outfit spending the most on the Medicare attack ads ... will not show their faces. The money is being spent through a Washington-based group, Americans for Tax Reform (ATR), that calls itself a "social welfare" nonprofit, so it does not need to reveal its donors to the public. This sort of thing has been happening a lot this year in House and Senate races around the country. Candidates have found their modest war chests, filled with checks for $2,500 or less, swamped by outside groups, which have no limits on the donations they can collect. In all, more than $800 million was spent through mid-October on election ads by outside groups, according to the Center for Responsive Politics . Of that total, nearly 1 in 4 dollars is so-called dark money, meaning the identities of the donors remain a secret. Voters watching TV, listening to the radio or receiving direct-mail appeals know only the names of the front organizations that bought the ads. In the past two years, American politics has been transformed by a surge in spending. One fact tells the story: explicit political-ad spending by outside groups in 2012 is on track to