U.S. Representative Liz Cheney called on fellow Republicans to reject white supremacism, days after a teenage gunman motivated by the right-wing "great replacement" theory allegedly killed 10 people in a racist shooting in western New York state.

"The House GOP leadership has enabled white nationalism, white supremacy, and anti-semitism," Cheney, an outspoken critic of former President Donald Trump and his allies in the House of Representatives, wrote on Twitter.

The man suspected of shooting dead 10 people at a supermarket in Buffalo, New York, deliberately sought a site with a high black population, authorities say.

The suspect, an 18-year-old white male, drove more than 320km (200 miles) to carry out the attack, police say.

The attack is being investigated as an act of racially motivated violent extremism.

Buffalo Mayor Byron Brown said the suspect arrived intending to take "as many black lives as possible".

“Alec Baldwin was drawing a revolver across his body and pointing it at a camera during rehearsal on the set of ‘Rust’ when the weapon fired and struck the cinematographer in the chest, according to an affidavit released on Sunday. The affidavit provided additional details about Thursday's accidental shooting in New Mexico that killed 42-year-old Halyna Hutchins and wounded director Joel Souza.” Reuters

Thirteen people were shot, three of them fatally, on Wednesday alone in Mayor Lori Lightfoot’s (D) Chicago.

Fox 32 reports the first shooting fatality on Wednesday was discovered around 5:15 a.m., when police found a man with gunshot wounds lying in the street “in the 4000 block of West Grenshaw Street.”

Around 7:30 p.m. a 29-year-old man was shot and killed while standing outside “in the 11000 block of South Indiana Avenue.” A vehicle was allegedly driven by the man and an occupant of the vehicle opened fire, killing him.

A bloody Fourth of July weekend ended with at least 150 people killed in more than 400 shootings that occurred across the country, according to data compiled throughout the weekend.

In New York City, at least 26 people were shot from Friday through Sunday, with at least two of the incidents resulting in deaths.

More than 180 people were killed in shootings across the country over the Fourth of July holiday weekend, according to data compiled by the Gun Violence Archive and reviewed by NPR.

By 11:30 p.m. on Monday, the Gun Violence Archive reported 189 people killed and 516 injured in shootings over the course of a 72-hour period starting Friday. In total, there were more than 540 shootings over the holiday weekend, the organization reported.

Those numbers may increase as the organization continues to collect statistics from the weekend.

When a man walked into a birthday party in Colorado Springs, Colo., over the weekend, killing six people and then himself, it was the deadliest mass shooting in the state since March, when a rampage at a grocery store left 10 people dead.

We're just 18 weeks into 2021, and already the U.S. has experienced 194 mass shootings. That averages out to about 10 a week.

The tally comes from the Gun Violence Archive, which defines a mass shooting as an incident in which four or more people are shot or killed, excluding the shooter. The full list can be found here.

This Abridge News topic aggregates four unique arguments on different sides of the debate. Here are the quick facts to get you started:

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Los Angeles police officials have announced a $100,000 reward for information that leads them to the gunman who ambushed two sheriff’s deputies in Compton over the weekend.

The Los Angeles County Sheriff’s Department announced the six-figure reward late Sunday for any information that leads to the arrest and conviction of a person seen on dramatic video walking up to a stopped police car, opening fire and running away, critically injuring the Los Angeles County Sheriff’s deputies inside.

Two Los Angeles police officers are recovering in hospital after being shot in what police are calling an ambush.

Video of the incident shows a figure approach the officers' vehicle, before opening fire and running away.

Los Angeles Sheriff Alex Villanueva called the act "cowardly". The suspect remains at large.

The Los Angeles County Sheriff's Department has announced a $100,000 (£78,000) reward for any information leading to the gunman's arrest.