Subject: O/t, dollar general ,
' A gunman killed several people in Jacksonville, Florida, before being shot dead by police, local media say.
The unidentified man opened fire and barricaded himself in a Dollar store, triggering a standoff with officers.
Jacksonville Mayor Donna Deegan told local TV channel WJXT: "One shooting is too much but these mass shootings are really hard to take."
There have been over 28,000 gun deaths in the US so far this.