ABC News photo editors chose the best news images of the week for this collection. <br><br> A man casts his ballot in a polling station located in the suburb of Mbare in Zimbabwe's capital Harare, July 30, 2018. Polls opened across Zimbabwe on July 30 for the first election since authoritarian leader Robert Mugabe was ousted last year.

A member of a wild horse team is dragged through the mud during the wild horse race during the 122nd annual Cheyenne Frontier Days Rodeo, July 26, 2018, in Cheyenne, Wyo.

Colombia's Vanessa Galindo competes in the Women's Rhythmic Gymnastics Ball competition during the 2018 Central American and Caribbean Games (CAC), in Barranquilla, Colombia, July 30, 2018.

Thai Royal Army members stand to attention during celebrations for Thailand's King Maha Vajiralongkorn 66th birthday near the Grand Palace in Bangkok, July 28, 2018.

A boy jumps into Geneva Lake in Saint Saphorin, western Switzerland, above a tourist protecting herself from the sun with an umbrella as a heat wave is sweeping across northern Europe, July 31, 2018.

A man who allegedly sought refuge in the headquarters of the opposition party Movement for Democratic Change (MDC) following unrest the day before, are detained in Harare, Aug. 2, 2018, inside a Zimbabwe police armored vehicle outside the party's offices.

Supporters of the opposition Movement for Democratic Change party (MDC) of Nelson Chamisa, sing and dance in the street outside the party's headquarters following general elections in Harare, Zimbabwe, July 31, 2018.

A firefighter lights backfires during the Carr Fire in Redding, California, July 27, 2018.

Elephants of the Arene circus are being hosed down by local firefighters due to high temperatures, Aug. 2, 2018, in Gilleleje, Denmark.

A firefighting aircraft drops fire retardant ahead of the River Fire as it burns through a canyon, Aug. 1, 2018, in Lakeport, Calif.

Elementary school sumo wrestlers wait for their turns in a waiting room during the Wanpaku sumo-wrestling tournament in Tokyo, July 29, 2017.