The ELCA provides several statements and responses for study, prayer and discussion in light of a community tragedy. Consider these resources:
Social Statement on Church in Society: A Lutheran Perspective (1991). Read the summary points in this document. In Spanish
A Message on Community Violence (1994): (in Spanish) The Church Council of the Evangelical Lutheran Church in America calls on members of this church to consider how they might become more involved in countering the reality and fear of violence in their communities.
A resolution regarding Gun Violence Prevention (adopted by the 2016 Churchwide Assembly)
Lutheran Counseling Services offers additional resources on their web site related to responding to tragedy, mental health care, and more..