A St. Louis police officer guards his gun with his hands and a cigar on the Washington University campus before the Presidential Debates on Sunday, October 9, 2016, in St. Louis, Missouri. 

A St. Louis police officer guards his gun with his hands and a cigar on the Washington University campus before the Presidential Debates on Sunday, October 9, 2016, in St. Louis, Missouri. 

 Ricardo Medrano cleans the pool in front of the mural he painted for his late children on Thursday, August 3, 2017, in Las Vegas. 

Ricardo Medrano cleans the pool in front of the mural he painted for his late children on Thursday, August 3, 2017, in Las Vegas. 

 Cristina Cuellar embraces one of the lions at the Lion Habitat Ranch in Henderson, Nevada, on August 23, 2017. 

Cristina Cuellar embraces one of the lions at the Lion Habitat Ranch in Henderson, Nevada, on August 23, 2017. 

 Raymond Grajeda practices his punches at the La Habra Boxing Club on Wednesday, November 4, 2016, in La Habra, California.

Raymond Grajeda practices his punches at the La Habra Boxing Club on Wednesday, November 4, 2016, in La Habra, California.

 The women of Alpha Chi Omega wait for their new members during Mizzou Bid Day on Sunday, August 21, 2016, in Columbia, Missouri. 

The women of Alpha Chi Omega wait for their new members during Mizzou Bid Day on Sunday, August 21, 2016, in Columbia, Missouri. 

 Keira O'Brien, 6, shows Mykolas Brown, 5, the protocol for the doctor's office at the Discovery Children's Museum on Friday, June 9, 2017, in Las Vegas. 

Keira O'Brien, 6, shows Mykolas Brown, 5, the protocol for the doctor's office at the Discovery Children's Museum on Friday, June 9, 2017, in Las Vegas. 

 "Concerned Student 1950" member Ayanna Poole celebrates the resignation of University of Missouri President Tim Wolfe on Monday,    November 9, 2015, on Carnahan Quad. 

"Concerned Student 1950" member Ayanna Poole celebrates the resignation of University of Missouri President Tim Wolfe on Monday,    November 9, 2015, on Carnahan Quad. 

 Allie Wise, 7, and Charlotte Wise, 3, attempt to pose for a family photo op in front of CNN's trailer on the Washington University campus on Sunday, October 9, 2016 in St. Louis, Missouri. 

Allie Wise, 7, and Charlotte Wise, 3, attempt to pose for a family photo op in front of CNN's trailer on the Washington University campus on Sunday, October 9, 2016 in St. Louis, Missouri. 

 Horidaleth Castro and Juan Grijalva prepare for their dance with Grupo Folklorico Libertad de Las Vegas at the "I Am An Immigrant" celebration event at the Asian Culture Alliance Center on Saturday, June 10, 2017, in Las Vegas. 

Horidaleth Castro and Juan Grijalva prepare for their dance with Grupo Folklorico Libertad de Las Vegas at the "I Am An Immigrant" celebration event at the Asian Culture Alliance Center on Saturday, June 10, 2017, in Las Vegas. 

 Young girls participate in a cake walk at a carnival in Simi Valley, California, on Saturday, May 11, 2013. 

Young girls participate in a cake walk at a carnival in Simi Valley, California, on Saturday, May 11, 2013. 

 An attendee of the Roots N Blues N BBQ Festival tries out his strength at the hammer competition on Sunday, October 3, 2016, at Stephens Lake Park in Columbia, Missouri. 

An attendee of the Roots N Blues N BBQ Festival tries out his strength at the hammer competition on Sunday, October 3, 2016, at Stephens Lake Park in Columbia, Missouri. 

 Matthew Hohn embraces his brother, Army Specialist Bradley Hohn, after Bradley planned a homecoming surprise at Matthew's graduation rehearsal on Thursday, June 8, 2017, at Ed W. Clark High School in Las Vegas. 

Matthew Hohn embraces his brother, Army Specialist Bradley Hohn, after Bradley planned a homecoming surprise at Matthew's graduation rehearsal on Thursday, June 8, 2017, at Ed W. Clark High School in Las Vegas. 

 The Lion and Dragon Dancers of the Lohan School of Shaolinin participate in a traditional Chinese performance at the Shangai Plaza groundbreaking ceremony on Friday, August 4, 2017, in Chinatown in Las Vegas. 

The Lion and Dragon Dancers of the Lohan School of Shaolinin participate in a traditional Chinese performance at the Shangai Plaza groundbreaking ceremony on Friday, August 4, 2017, in Chinatown in Las Vegas. 

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