Two mass shootings in less than 24 hours have shaken the US
Twenty people were killed in a supermarket in El Paso, Texas
Police treating it as domestic terrorism after finding anti-immigrant 'manifesto'
In Dayton, Ohio, nine people are dead and suspect is 24-year-old male
Democratic candidates for the 2020 election calling for more gun control
Some are also blaming President Trump's immigration rhetoric but White House says that is ridiculous
"The places change, the numbers change, but the choice of weapon remains the same. In the United States, people who want to kill a lot of other people most often do it with guns."
The Washington Post has documented each mass shooting since 1966.
Explore their data - The terrible numbers that grow with each shooting, external
Image source, Washington Post
Image source, Getty ImagesPeople hold hands in St Pius X Church at a vigil
Image source, Getty ImagesCandles honour the 20 dead
Image source, Getty ImagesThe city straddles the Mexico border and has a large Hispanic community
President Trump has reacted to the overnight mass shooting in Ohio.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
On Saturday, the president had described the attack in El Paso as "an act of cowardice". He wrote in a tweet: "I know I stand with everyone in this Country to condemn today's hateful act. There are no reasons or excuses that will ever justify killing innocent people..."
The past week's mass shootings at a garlic festival in California, a Walmart in Texas and in a busy nightlife district in Ohio, are part of a deadly trend.
The reasons for mass shootings are many and complex, and people across the US and around the world have struggled to understand the violence.
Here analysts discuss some of the factors that may lie behind the grim numbers.
Why are mass shootings getting worse?
How US mass shootings are getting worse
Good morning. The US has woken up to news of another mass shooting, the second deadly attack in the past 24 hours. We'll bring you all the latest from El Paso, Texas, where a gunman killed 20 people at a Walmart supermarket, and from Dayton, Ohio, where nine people died when a shooter opened fire in a busy nightlife district. Dozens more were injured at the two events.
We'll also have all the political reaction as the US tries to make sense of the attacks.