In Warsaw’s Powazki Cemetery rows of simple birch crosses mark the graves of young people who died fighting for their country. On November 1st every year, thousands of Poles pay their respects, their faces lit by candle glow. I thought of them this morning when I heard on the radio the names and ages of the victims in the shooting at Marjory Stoneman Douglas High. Perhaps we should devote a section of Arlington National Cemetery to all the people who’ve given their lives in American schools – and offices, churches, airports, movie theaters, concert spaces. It would stand as a reminder not of their bravery - which in some cases was exceptional - but of our cowardice.