From those praising him for reuniting the country over gun control, to those bashing him as a Hollywood stripper, people are divided over McConaughey's speech.
"Kudos to Matthew for keeping this light shining on Uvalde. Much respect to him," a user said.
The Uvalde-born actor said that "something may change" on gun reforms "instead of just talking about it and nothing changes again for another 30 years."
The Department of Homeland Security said the United States "remains in a heightened threat environment."
The identity of the reporter who asked the question was not immediately clear.
Ken Paxton announced he would launch an investigation into whether or not Twitter has been falsely reporting the number of bots.
Robb Elementary School teacher Arnulfo Reyes, who was shot twice during the incident, insisted he did his best to protect the children.
Texas Governor Greg Abbott directed schools to receive training that would "help law enforcement on school campuses better respond to" mass shootings.
The defense has argued for weeks that the recent mass shootings might make it more difficult for jurors to remain neutral in Nikolas Cruz's sentencing trial.
"Depraved acts of violence...are ripping apart families, tearing at people's faith, and shredding the fabric of our society," the actor wrote in an op-ed.
Mass shootings dominated headlines over the weekend across America.
The open letter, signed by more than 250 gun-rights supporters, comes less than two weeks after the Uvalde school shooting.
Angeli Gomez said Thursday an officer threatened to charge her for violating probation on an unrelated charge for "obstruction of justice."
The Uvalde school board decided to take no action against Police Chief Pete Arredondo or anyone else during a closed-door session on Friday.
The governor defended his veto of $35 million in funding for a new training camp after the MLB team donated $50,000 to a gun safety organization.
The loophole is frequently used by law enforcement officials in Texas to shield records related to a case in which a suspect dies in police custody.
Representative Carolyn Maloney said Friday that a hearing scheduled for next week is about examining the country's gun violence epidemic and "saving lives."
Cornyn said "it will be embarrassing" if the Senate can't agree on a legislative response to the recent mass shootings.
Jonathan Trent Patterson, 22, has been charged with electronically transmitting multiple shooting threats relating to several schools in Anderson County.
The president urged a ban on assault weapons but appeared to recognize it was not politically feasible.
Democratic Senator Chris Murphy recently blasted Republicans for trying to link mass shootings to a mental health crisis.
Members of biker groups reportedly demanded that journalists "stay on the sidewalk" as mourners paid their respects to 10-year-old Eliahana Torres on Thursday.
Social media users criticized the Maine senator for comments she made about a bipartisan meeting on gun measures.
"This is just a stall tactic from Governor Abbott," state Senator Roland Gutierrez, who represents Uvalde, said on Tuesday.
The pro-gun group has bene criticized for ties to foreign nationals in wake of the Uvalde school shooting.
"When faced with a problem, people turn to the experts," Jacksonville Mayor Lenny Curry said Wednesday announcing a partnership with a security company.
On Tuesday, May 24, 18-year-old Salvador Ramos fatally shot 19 students and two teachers at the Robb Elementary School in Uvalde, Texas.
The Texas senator has been criticized for the timing of him sharing clips of him taking part in previously recorded episode of "Poker After Dark."
Ted Cruz and other GOP figures have been condemned for their suggestions for how to prevent mass shootings after four killed in Oklahoma.