More than 180 people died in gun violence over the July 4 holiday weekend

Fourth of July weekend saw a rise gun violence – with more than 180 people killed and 516 injured in shootings across the U.S., according to data from Gun Violence Archive. 

In the first five days of July, there were a whopping 20 mass shootings, bringing 2021's total to 336. May saw 72 mass shootings and June saw 76, according to the archive.

"The 14 mass shootings over this past holiday weekend (Friday to Sunday) are the most of any weekend in 2021," the organization said in a tweet.

In Chicago, where police said gun violence is increasing this year, at least 82 people were shot – 14 fatally – over the holiday weekend, CBS Chicago reports. The number of shootings on Fourth of July weekend is up from 2019, when 68 people were shot, and 2020, when nearly 80 people were shot. 

A 40-year-old man was killed on Friday night after a neighbor complained about his music. After an argument, an unidentified person shot the victim several times in the torso, CBS Chicago reports. 

On Saturday night, woman was killed and two men were injured in a shooting in an alley. A 33-year-old man started shooting around 10:46 p.m. and a witness with a concealed carry license saw the incident and then shot the suspect. The suspect is in serious condition and was taken into custody, according to the station.

Two police officers were also shot early Monday morning while disperse crowds in the city's South Austin neighborhood.

In New York City, police reported 26 victims in 21 shootings over the holiday weekend. On Long Island, one man was killed and two people were hospitalized after gunfire erupted at a Fourth of July block party. Police are looking for a suspect, CBS New York reports. 

In Cincinnati, two men are believed to have shot and killed each other, injuring three others, at the city's Smale Riverfront Park on Sunday night, according to CBS affiliate WKRC.

And in Dallas, five people were shot – three killed and one in critical condition –  during a confrontation at a neighborhood block party on the Fourth of July, according to CBS Dallas.

According to Gun Violence Archive, there have been 22,662 gun violence deaths in 2021. This includes all causes, such as murder, unintentional killings and suicide. There have been 336 mass shootings and 16 mass murders. 

The archive says mass murder, a subset of a mass shooting, means four or more are killed in once incident – including gun violence, bombings or any other incident. It defines mass shootings as four or more people shot in a single event, not including the shooter.

To catalog these events, the archive uses up to 7,500 active sources, including law enforcement, government and media.

Last year, homicide rates surged nearly 30% across 34 U.S. cities from the previous year. This historic year-to-year increase, was caused by a "perfect storm" of possible contributing factors, according to a new study conducted for the Council on Criminal Justice. 

Societal inequities exacerbated by the coronavirus pandemic, strains on gun violence intervention programs and a fraught relationship between police and communities, may have contributed to the uptick researchers say.

Authorities had hoped that the spike in homicides last year would subside, but they remain higher than they were in pre-pandemic times. Although official data has yet to be released by the federal government, a survey of law enforcement agencies in dozens of U.S. cities conducted by the Major Cities Chiefs Association found a higher rate of homicides and aggravated assaults in January through March of 2021 compared with the same time period in 2020. 

According to Gun Violence Archive, there were 417 mass shootings in 2019 and a total of 15,208 gun violence deaths from all causes. The number of gun violence deaths this year has already surpassed that, with more than 20,000 as of July 6. 

Erin Donaghue contributed to this report.