Ahmad Dawoud recalls the day 10 years ago when a Lebanese soldier asked to search his taxi. Then 17, the Palestinian didn't wait for the soldier to find the weapons hidden in the trunk.
He jumped from the car and fled into the nearby Palestinian refugee camp, where the Lebanese army has no authority.
But it was not long afterward that Dawoud, who once admired the radical groups that have sprouted in the camps in Lebanon, decided he was tired of running. That same year, in 2007, he surrendered to authorities and spent 14 hard months in jail.
Although he was released without a conviction, he couldn't erase the biggest strike against him: As a Palestinian in Lebanon,...