People gather near a makeshift memorial, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

People embrace at a gathering to pay tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

Women hold candles at a gathering, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

People attend a rally after the news broke that Chow Tsz-lok, 22, a university student who fell during protests at the weekend, died early on Friday morning, in Hong Kong, China November 8, 2019.

A graduate cries as she paying tribute with flower to Chow Tsz-lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

People pay tribute with flowers to Chow Tsz-lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

Graduates attend a ceremony to pay tribute to Chow Tsz-lok, 22, an university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

People gather, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

People light candles to commemorate Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

Students hold images of Chow Tsz-Lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, during a ceremony to pay tribute to him at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

Students pay tribute with flowers to Chow Tsz-lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

A police technician looks for explosive devices after a protest in the Mong Kok area in Hong Kong, China, November 8, 2019.

A woman cries as others gather to pay tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

Attendees hang a banner at a gathering, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

A woman lights a candle to commemorate Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

Graduates attend a ceremony to pay tribute to Chow Tsz-lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

Students attend a ceremony to pay tribute to Chow Tsz-lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.

A child gestures at a gathering paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

A man leans against a wall at gathering, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

People walk up the stairs at a gathering, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

A woman holds her hands in prayer, paying tribute to Chow Tsz-lok, 22, a university student who died after he fell during a protest in Hong Kong, China, November 8, 2019.

People attend a rally after the news broke that Chow Tsz-lok, 22, a university student who fell during protests at the weekend, died early on Friday morning, in Hong Kong, China November 8, 2019.

A man receives help after he was pepper sprayed by police in the Mong Kok area in Hong Kong, China, November 8, 2019.

A man wears a Guy Fawkes mask during a ceremony to pay tribute to Chow Tsz-lok, 22, a university student who fell during protests at the weekend and died early on Friday morning, at the Hong Kong University of Science and Technology, in Hong Kong, China November 8, 2019.