Fireworks light up the sky over the Olympic Stadium during the opening ceremony of the 2020 Olympic Games, in Tokyo, on July 23, 2021.

Fireworks are reflected off a building as people watch the opening ceremony of the 2020 Olympics on July 23, 2020, in Tokyo.

Dancers perform during the opening ceremony of the 2020 Olympic Games at Olympic Stadium in Tokyo on July 23, 2021.

Performers are seen in action during the opening ceremony of the 2020 Olympic Games on July 23, 2021, in Tokyo.

A drone display in the shape of a globe is seen over the top of the stadium during the opening ceremony of the 2020 Olympic Games on July 23, 2021, in Tokyo.

Anti-Olympics protesters stage a rally in front of lines of policemen near Olympic Stadium in Tokyo on July 23, 2021.

Flagbearers Yui Susaki and Rui Hachimura of Japan lead their contingent during the opening ceremony of the 2020 Olympic Games on July 23, 2021, in Tokyo.

Empty seats are seen at the opening ceremony of the 2020 Olympics on July 23, 2021, in Tokyo.

A clash between protesters and police officers is seen during a protest to mark the opening ceremony of the 2020 Olympics on July 23, 2021 in Tokyo.

Naomi Osaka of Japan holds the Olympic torch during the opening ceremony in Tokyo, Japan on July 23, 2021.

The opening ceremony of the 2020 Olympics is seen in Olympic Stadium on July 23, 2021, in Tokyo.

The U.S. delegation marches during the opening ceremony of the 2020 Olympics at the Olympic Stadium on July 23, 2021, in Tokyo.

Naomi Osaka carries the Olympic torch towards the Olympic cauldron during the opening ceremony of the 2020 Olympic Games on July 23, 2021, in Tokyo.

Naomi Osaka lights the Olympic cauldron during the opening ceremony at the Olympic Stadium at the 2020 Olympics, July 23, 2021, in Tokyo.

Naomi Osaka of Team Japan lights the Olympic cauldron with the Olympic torch during the opening ceremony of the 2020 Olympics on July 23, 2021, in Tokyo.