President Obama sent an apology to Afghan President Hamid Karzai last week, in the thick of mass protests after US personnel burned copies of the Koran. The reactions of Afghan mobs across the country can strike Westerner observers as over the top, especially when the disrespect shown the Koran in this case seems to have been“inadvertent.’’ But in a way, that makes the insult worse. Muslims in Afghanistan can ask: After a decade in our midst, do you really understand so little?