Four dead in mass shootings across the US – video

Four people have died in three mass shootings across the US this weekend. Three people were killed in what officials have a called a racially motivated attack at a Dollar General store in Jacksonville, Florida.

A teenager and at least two other people were injured when a shooting took place at a football game in Oklahoma that sent players and officials scrambling off the field and caused panicked spectators to hunker down in the stands on Friday.

On Saturday, at least seven people were taken to local hospitals with non-life-threatening injuries after a shooting during the Boston Caribbean Carnival, police have said