Hong Kong singer and pro-democracy activist Denise Ho was splashed with red paint on Sunday while participating in a rally in Taiwan in support of the ongoing anti-government protests in her home city.

The 42-year-old Ho is a Cantopop star-turned-political icon who has become one of the most recognizable HK dissidents, speaking to the US Congress and to international media.

She was giving an interview on the sidelines of the Taipei rally when a masked man ran up to her and poured red paint over her head.

Taiwan police have arrested two men for the attack. The culprit has been identified as Hu Chih-wei, the chairman of the Chinese Unity Promotion Party, a political party led by a former gang leader named Chang An-le or the “White Wolf.”

Hu’s accomplice has been identified as 54-year-old Liang Tai-fu. He is reported to have organized crime connections.

For her part, Ho has declared that she has no intention of keeping quiet or backing down.

I have just been attacked with red paint by a person who was identified as a pro-beijing camp member. Arrived in Taipei to participate in the #929GlobalAntiTotalitarianism protest. This is a serious attack to free speech and we shall not back down in face of these threats.😡 pic.twitter.com/3PAqngUuvf — Denise Ho (HOCC) (@hoccgoomusic) September 29, 2019