Boats with tourists aboard sail along the Seine river next to the Notre Dame Cathedral as the sun sets in Paris, Sunday, April 21, 2019. (Photo by AP)

A man sits in his canoe fishing in the waters of the Pangalanes Canal near the village of Manambato, Madagascar, on March 22, 2019. (Photo by AFP)

A view of strips of oil on the surface of the Caspian Sea in Baku, Azerbaijan, on March 22, 2019. (Photo by AFP)

People look on as kites in various shapes fly in the sky during the International Kite Festival in Weifang, Shandong province, China, April 20, 2019. (Photo by Reuters)

A costumed participant marches during the Easter Parade and Bonnet Festival, Sunday, April 21, 2019, in New York, US. (Photo by AP)

People lit candles on the Trocadero where they watch The Eiffel tower going dark at midnight in Paris, as an homage to the victims of Sri Lanka bombings, during the night of April 21-22, 2019. (Photo by AFP)

Sudanese demonstrators use their mobile phone torches as lamps as they attend a mass anti-government protest outside the Defense Ministry in Khartoum, Sudan, April 21, 2019. (Photo by Reuters)

Men carry banners of their parish during the beginning of the Easter riders procession near Ralbitz, eastern Germany, Sunday, April 21, 2019. (Photo by AP)

A view from a Canadian Forces helicopter shows the flooded region of Rigaud, Quebec, Canada April 21, 2019. (Photo by Reuters)

Joey Logano, driver of the #22 Shell Pennzoil Ford, pits during the Monster Energy NASCAR Cup Series Toyota Owners 400 at Richmond Raceway on April 13, 2019 in Richmond, Virginia. (Photo by AFP)