“Community members in suburban Denver marked the 20th anniversary of the Columbine High School shooting Saturday with a remembrance ceremony that celebrated the school’s survival and by volunteering at shelters, doing neighborhood cleanup projects and laying flowers and cards at a memorial to the 13 people killed.

““We’re changed,” Dawn Anna, whose daughter Lauren Townsend was among the students killed in the school’s library, said before a crowd of more than 2,000 gathered in a park near the high school.

““We’re weaker in some places, but hopefully we’re stronger in most of them. Our hearts have giant holes in them. But our hearts are bigger than they were 20 years ago.””

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