Candles burn as part of a memorial at the scene of Sunday morning’s mass shooting in Dayton, Ohio, U.S. August 5, 2019.
The United States flag flies at half staff above the White House in response to the El Paso and Dayton mass shooting attacks in Washington, U.S. August 4, 2019.
Veronica and Kayla Espresion light candles at a vigil a day after a mass shooting at a Walmart store in El Paso, Texas, U.S. August 4, 2019.
Local and state politicians and business leaders join community members for a vigil at the scene of a mass shooting in Dayton, Ohio, U.S. August 4, 2019.
U.S. President Donald Trump arrives to speak about the shootings in El Paso and Dayton in the Diplomatic Room of the White House in Washington, U.S., August 5, 2019.
People take part in a rally against hate a day after a mass shooting at a Walmart store, in El Paso, Texas, U.S. August 4, 2019. The placard reads, "This is caused by racism".
People take part in a rally against hate a day after a mass shooting at a Walmart store, in El Paso, Texas, U.S. August 4, 2019.
A group of men embrace during a vigil a day after a mass shooting at a Walmart store in El Paso, Texas, U.S. August 4, 2019.
Democratic presidential candidate Beto O'Rourke is seen at the site of a mass shooting where 20 people lost their lives at a Walmart in El Paso, Texas, U.S. August 4, 2019.
Mourners attend a vigil at the scene after a mass shooting in Dayton, Ohio, U.S. August 4, 2019.
Serenity Lara cries during a vigil a day after a mass shooting at a Walmart store in El Paso, Texas, U.S. August 4, 2019.
U.S. President Donald Trump speaks about the shootings in El Paso and Dayton in the Diplomatic Room of the White House in Washington, U.S., August 5, 2019.
Candles burn as part of a memorial at the scene of Sunday morning’s mass shooting in Dayton, Ohio, U.S. August 5, 2019.
Mourners gather for a vigil following a mass shooting in Dayton, Ohio, U.S. August 4, 2019.
A woman prays during a vigil at the scene of a mass shooting in Dayton, Ohio, U.S. August 4, 2019.
People with the Mexican flag and the U.S. flag take part in a rally against hate a day after a mass shooting at a Walmart store, in El Paso, Texas, U.S. August 4, 2019.
People take part in a rally against hate a day after a mass shooting at a Walmart store, in El Paso, Texas, U.S. August 4, 2019.
Joanna Villarreal hugs her mom during a vigil a day after a mass shooting at a Walmart store in El Paso, Texas, U.S. August 4, 2019.
People gather for a vigil a day after a mass shooting at a Walmart store in El Paso, Texas, U.S. August 4, 2019.
Mourners pay their respects a day after a mass shooting at a Walmart store in El Paso, Texas, U.S. August 4, 2019.
Democratic presidential candidate Beto O'Rourke takes part in a rally against hate a day after a mass shooting at a Walmart store, in El Paso, Texas, U.S. August 4, 2019.
Mourners attend a vigil at the scene of a mass shooting in Dayton, Ohio, U.S. August 4, 2019.
Deceased mass shooting suspect Connor Betts of Bellbrook, Ohio appears in an identity photograph released by police in Dayton, Ohio, U.S. August 4, 2019. Dayton Police Department/Handout via REUTERS.
People take part in a rally against hate a day after a mass shooting at a Walmart store, in El Paso, Texas, U.S. August 4, 2019.
Mourning after back-to-back shootings