Lara Alqasem, a 22-year-old American student who arrived in Israel last week to start a master’s degree program at Hebrew University, is entering her sixth day of detention Monday at Ben-Gurion Airport. Her “crime,” according to the Strategic Affairs Ministry, is that while studying for her bachelor’s degree in Florida, she was president of the state’s chapter of a group that promotes boycotts, divestment and sanctions against Israel as a way to battle the occupation.