![Louise Delmotte FILE - A general view of the Lai Chi Kok detention centre where activist Leung Kwok-hung, known as "Long Hair," is detained in Hong Kong, Monday, Dec. 18, 2023. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Louise Delmotte)](https://mapi.associatedpress.com/v2/items/2fc96fe68351430abd7c46f07f8893dd/preview/preview.jpg?s=680x&wm=false)
FILE - A general view of the Lai Chi Kok detention centre where activist Leung Kwok-hung, known as "Long Hair," is detained in Hong Kong, Monday, Dec. 18, 2023. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Louise Delmotte)
![Louise Delmotte Emilia Wong catches up on reading letters from activist and partner Ventus Lau on her way back after visiting him at prison, in Hong Kong, Monday, March 25, 2024. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Louise Delmotte)](https://mapi.associatedpress.com/v2/items/2b7d44d17fdd47cf85edf5ef698a3960/preview/preview.jpg?s=680x&wm=false)
Emilia Wong catches up on reading letters from activist and partner Ventus Lau on her way back after visiting him at prison, in Hong Kong, Monday, March 25, 2024. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Louise Delmotte)
![Louise Delmotte FILE - A general view of the Stanley Prison, where activist Ventus Lau is detained in Hong Kong, Friday, Aug. 4, 2023. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Louise Delmotte, File)](https://mapi.associatedpress.com/v2/items/d5f5467da507406892905f3a1e47302f/preview/preview.jpg?s=680x&wm=false)
FILE - A general view of the Stanley Prison, where activist Ventus Lau is detained in Hong Kong, Friday, Aug. 4, 2023. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Louise Delmotte, File)
![Kin Cheung Pro-democracy activists Leung Kwok-hung, known as "Long Hair," left, raise his hands as activists are escorted by Correctional Services officers to a prison van for a court hearing in Hong Kong, Friday, May 28, 2021. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Kin Cheung, File)](https://mapi.associatedpress.com/v2/items/244e149d15984643b54bcec29d6dd3f0/preview/preview.jpg?s=680x&wm=false)
Pro-democracy activists Leung Kwok-hung, known as "Long Hair," left, raise his hands as activists are escorted by Correctional Services officers to a prison van for a court hearing in Hong Kong, Friday, May 28, 2021. For decades, Hong Kong's activists have been fighting for democracy. But a national security law imposed by Beijing in 2020 has dramatically changed their lives. In the city's biggest national security case, 47 democracy advocates were charged in 2021 over their roles in an unofficial primary election. (AP Photo/Kin Cheung, File)