Organisers expect the second March for 'Our Lives' rally to draw around 50,000 demonstrators to the Washington Monument.
In 1970, there was a six-week student walkout in the district, after the school board decided not to renew the contract of George Garza, a popular Mexican American teacher at Robb Elementary School.
In a highly personal 22-minute speech, McConaughey exhorted a gridlocked Congress to pass gun reforms that can save lives without infringing on Second Amendment rights.
Ellie's mother Jennifer Lugo also posted many photos of her daughter on social media. 'My heart is broken,' she wrote alongside a photo of Ellie at her first communion in 2021.
Javier Cazares is the father of fourth-grader Jacklyn Cazares, one of 19 youngsters who died along with two teachers in a classroom at Robb Elementary School in Uvalde.
The man who authorities say carried out the shooting, 18-year-old Salvador Ramos, is a U.S.citizen, Texas Gov. Greg Abbott said in a news conference on Tuesday.
Aside from several Democratic-controlled states, the majority have taken no action on gun control in recent years or have moved aggressively to expand gun rights.
"As hate speech and hate killings thrive, we must use all avenues to stop this madness from overwhelming the whole world," the former home minister said in a series of tweets.
On social media, pictures of smiling children were posted, their families begging for information. Classes had been winding down for the year and each school day had a theme.
“As a nation we have to ask, when in God’s name are we going to stand up to the gun lobby? When in God’s name are we going to do what has to be done?” US President Biden asked.
Parent Richard Allen told the station he arrived at the school soon after the shooting and reported seeing a number of victims being taken away in ambulances.
Devin Patrick Kelley, who killed 26 people in a church shooting, went through the pews looking for survivors to execute and his first targets were children.
The Texas church massacre is providing a familiar frustration for law enforcement: FBI agents are unable to unlock the gunman's encrypted cellphone to learn what evidence it might hold.
The latest US mass shooting again raised questions about gun control but President Donald Trump dismissed them and instead praised a gun-owner who opened fire in an effort to stop the killer.
The spokeswoman, Ann Stefanek, said Sunday that Devin Kelley served 12 months' confinement after a 2012 court-martial. He ultimately received a bad conduct discharge and reduction in rank.