A protester rests at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
An anti-government protester (C) is showered down by volunteer medical workers after he was soaked in pepper-spray infused water by the police water cannon, inside the Hong Kong Polytechnic University in the Hung Hom district of Hong Kong on November 18, 2019. AFP / Anthony WALLACE
Protesters clash with police as police fire teargas at them at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
Demonstrators hold neon lit 'FREE HK' lights during a rally marking the 30th anniversary of the Eastern Europe Revolutions at Edinburgh Place in the Central district of Hong Kong, China, on Sunday, November 17, 2019. Dylan Hollingsworth/Bloomberg
Protesters throw fire bomb as police fire water canon during a clash at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
Protesters throw fire bomb as police fire water canon during a clash at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
A protester rests at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
An anti-government protester (C) is showered down by volunteer medical workers after he was soaked in pepper-spray infused water by the police water cannon, inside the Hong Kong Polytechnic University in the Hung Hom district of Hong Kong on November 18, 2019. AFP / Anthony WALLACE
Protesters clash with police as police fire teargas at them at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
Demonstrators hold neon lit 'FREE HK' lights during a rally marking the 30th anniversary of the Eastern Europe Revolutions at Edinburgh Place in the Central district of Hong Kong, China, on Sunday, November 17, 2019. Dylan Hollingsworth/Bloomberg
Protesters throw fire bomb as police fire water canon during a clash at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
Protesters throw fire bomb as police fire water canon during a clash at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images
A protester rests at The Hong Kong Poytechnic University on November 18, 2019 in Hong Kong, China. Anthony Kwan/Getty Images