Mass shootings rock US: 9 killed, dozens wounded in 3 cities

At least 9 people have been killed and 2 dozen others wounded after shootings in 3 cities in the United States. The shootings on Saturday night and Sunday morning were the latest outbreaks of gun violence that have left legislators scrambling to tackle the crisis. The violence struck as communities in three other cities are still grieving from massacres that killed 10 people at a grocery store in Buffalo, 21 victims at an elementary school in Texas.