Residents gather by a bridge to look at cars left crumpled in one of the tributaries of the Patapsco River that burst its banks as it channeled through historic Main Street in Ellicott City, Md., Monday, May 28, 2018. Sunday's destructive flooding left the former mill town heartbroken as it had bounded back from another destructive storm less than two years ago. (Photo by David McFadden/AP Photo)





Rescue personnel examine damage on Main Street after a flash flood rushed through the historic town of Ellicott City, Maryland, USA, 27 May 2018. The National Weather Service stated as much as 9.5 inches of rain fell in the area. (Photo by Jim Lo Scalzo/EPA/EFE)





A car is pulled out of the floods in the small city of Herrstein, southern Germany, Monday, May 28, 2018. Heavy rain on the evening before caused flooding destroying big parts of the village. (Photo by Harald Tittel/DPA via AP)





Princess Charlene of Monaco drinking champagne on the podium after Red Bull driver Daniel Ricciardo of Australia winning the Formula One race, at the Monaco racetrack, in Monaco, Sunday, May 27, 2018. (Photo by Luca Bruno/AP Photo)





4,500 pairs of shoes are laid out in front of the European Parliament in Brussels ahead of the EU Foreign Affairs Council meeting by AVAAZ members on Monday, May 28, 2018. The AVAAZ campaign, Palestinian Lives Matter, are highlighting the Gaza tragedy with 4,500 pairs of shoes representing one pair for every life lost in this conflict in the last decade, in front of where ministers enter the Parliament building. (Photo by Olivier Matthys/AP Images for AVAAZ)





Women elite athletes wait at the start line during the Vitality London 10,000 on May 28, 2018 in London, England. (Photo by Jack Thomas/Getty Images)





A Belarussian military dog handler fends off his charge during the 100th anniversary of the Belarussian Border Guard Service celebration in the central Minsk park, Belarus, 27 May 2018. The Border Guard day is held on 28 May. (Photo by Tatyana Zenkovich/EPA/EFE)





A large representation of the Quran, Islam's holy book, is displayed on the Mediterranean seafront promenade, during the Islamic holy month of Ramadan, in Beirut, Lebanon, Monday, May 28, 2018. (Photo by Hassan Ammar/AP Photo)





Clowns prepare themselves to take part in a parade during Peru's Clown Day celebrations in Lima, Peru May 25, 2018. (Photo by Guadalupe Pardo/Reuters)





The Atholl Highlanders demonstrate a dance at the Atholl Gathering and Highland Games at Blair Castle, Scotland, Britain, May 27, 2018. (Photo by Russell Cheyne/Reuters)





A cowboy runs away from a charging bull during the bull riding competition at the Bandera Pro Rodeo during Memorial Day weekend in Bandera, Texas, U.S. on May 26, 2018. Picture taken on May 26, 2018. (Photo by Adrees Latif/Reuters)





Thousands of bikers and military veterans take part in the Rolling Thunder motorcycle parade in Washington DC, on May 27, 2018. Wearing bandanas, cowboy hats or gleaming helmets, tens of thousands of bikers descended on Washington Sunday to parade in honor of US soldiers missing in action in foreign wars, a now 30-year-old tradition known as “Rolling Thunder”. (Photo by Marvin Joseph/The Washington Post)





A man holds his dog, as participants gather in the parking lot of the Pentagon as thousands of military veterans and their supporters participate in the 31st annual Rolling Thunder motorcycle rally and Memorial Day weekend “Ride for Freedom” motorcycle procession in Washington, U.S., May 27, 2018. (Photo by Eric Thayer/Reuters)





Participants gather in the parking lot of the Pentagon as thousands of military veterans and their supporters participate in the 31st annual Rolling Thunder motorcycle rally and Memorial Day weekend “Ride for Freedom” motorcycle procession in Washington, U.S., May 27, 2018. (Photo by Eric Thayer/Reuters)





An attendee reads a newspaper during the 2018 National Memorial Day Parade held by the American Veterans Center, in Washington, U.S., May 28, 2018. (Photo by Toya Sarno Jordan/Reuters)





A demonstrator fires a homemade mortar towards riot police during a protest against Nicaragua's President Daniel Ortega's government in Managua, Nicaragua May 28, 2018. (Photo by Oswaldo Rivas/Reuters)





Aboriginal performer known as “Turtle” plays a didgeridoo as he participates in a ceremony with fellow performer Terry Olsen to mark the start of National Reconciliation Week for Aboriginal and Torres Strait Islanders in Sydney, Australia, May 28, 2018. (Photo by David Gray/Reuters)





Canadian slackliner Mia Noblet walks on a slackline (25mm wide, 3mm thick and 60m long) during “Tianmen Mountain Female High-Heeled Highline Challenge” at Zhangjiajie National Forest Park on May 27, 2018 in Zhangjiajie, Hunan Province of China. 23-year-old Canadian slackliner Mia Noblet became the first one who finished the challenge in 22 minutes and 36 seconds while 32-year-old French slackliner Mini Guesdon broke the record in 9 minutes and 24 seconds during her second attempt on Sunday. (Photo by VCG/VCG via Getty Images)