Eric Liu : A child was killed because he went to school in Marysville , Washington , today . The more that a minority of citizens block prevention and treatment , the less effective prevention and treatment become for all . Liu : Steady stream of shootings makes them virtually normal . Is this `` American exceptionalism '' ? It 's contagious epidemic . Comment: Liu : We the people must set tone , standards , with laws , norms . It 's our responsibility .
Eric Liu : A child was killed because he went to school in Marysville , Washington , today . Liu : Steady stream of shootings makes them virtually normal . Is this `` American exceptionalism '' ? It 's contagious epidemic . Comment: Liu : We the people must set tone , standards , with laws , norms . It 's our responsibility .