The first weekend of summer brought a tragic yet familiar pattern for American cities wracked by gun violence as mass shootings left dozens dead or wounded at a party in Alabama, an entertainment district in Ohio and a grocery in Arkansas. [time-brightcove not-tgx=”true”] It was the second straight weekend that saw an outbreak of mass shootings across the U.S., prompting mayors in places marred by the violence to plead for help. In Michigan, a deputy was fatally shot while pursuing a suspected stolen vehicle in what the county sheriff described as an ambush.