Shooting in Connecticut Obama vows urgent try to stem violence Promises to use his full power, tells mourners the nation must change ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page kevin lamarque/reuters President Obama spoke Sunday night in Newtown, Conn. kevin lamarque/reuters Attendees at a memorial service Sunday evening in Newtown waited for the event to begin. lucas jackson/reuters A family embraced at a memorial in Newtown to the victims. Getty Images Kat Donohue of Newtown helped to decorate donated Christmas trees. REUTERS A woman left flowers at 27 wooden angels near the Sandy Hook School. AP Candles displayed the names of victims. REUTERS Mourners embraced at a memorial in Newtown. REUTERS A man stood at a memorial near the school. Associated press A woman visited a memorial at St. Rose of Lima Roman Catholic Church. Associated press A teddy bear and flowers were in a Newtown police car. Associated press A young girl holding a teddy bear looked at a memorial. Associated press A police officer was at the St. Rose church after a threatening call.