yourselves to be consumed by it. the hurt you feel must not be allowed to turn into hate. but instead into the search for justice. >> in every generation the world has produced enemies of human freedom. they have attacked america. because we are freedom's home and defender, and the commitment of our fathers is the calling of our time. megyn: michael gerson is a former speech writer for former president george w. bush and participated in that speech at national cathedral. this is a big task for president obama and those who advise him in the wake after tragedy like this. what should his number one goal be tonight? >> we face too many of these moments after 9/11 with the columbia shuttle disaster and others.