The anti-war protesters in the streets claim they are disappointed that President Bush was unable to find a nonviolent solution to the crisis in Iraq. Interestingly enough, some of them seem unable to adhere to nonviolent tactics themselves in confronting Mr. Bush and his policies. On Friday in Athens, Greece, anti-war protesters hurled Molotov cocktails — gasoline-fueled firebombs — at the American embassy, according to reports in the European press. Also Friday, an anti-war protester threw a Molotov cocktail into a McDonald’s hamburger stand in a suburb of Oslo, Norway, Agence France Presse reported. In San Francisco on Friday, police discovered a backpack full of what the San Francisco Chronicle described as “about a dozen bottles filled with gasoline and equipped with makeshift fuses,” left where police had earlier clashed with anti-war protesters. Even here in New York, 17 police officers were injured in clashes Saturday with anti-war protesters. One was struck in the head with a brick, one was kicked in the face, and two were knocked off their horses, police said. No doubt those engaging in the violence are a minority among the anti-war protesters. But it doesn’t take many of them to begin to undermine the marchers’ ostensible message.