Hong Kong’s High Court convicted a 24-year-old protester on Tuesday in the first trial held under the draconian national security law Beijing imposed upon the city last year.

The three-judge panel unanimously convicted Tong Ying-kit on one count of committing incitement to secession and one count of committing terrorist activities.

The case is expected to stand as precedent as the government moves to try the more than 115 people charged under the controversial national security law that went into effect July 1, 2020, which has been widely criticized by Western nations.

Police arrested Tong the same day the law went into effect. He was driving his motorcycle through a neighborhood with a banner that read “Liberate Hong Kong Revolution of our Times” and was apprehended after colliding with police who were attempting to stop him.

The judges found Tong guilty of committing national security charges as displaying the banner “was capable of inciting others to commit secession,” which they said was his intention, while his failure to stop for police attempting to detain him “was a deliberate challenge mounted against police, a symbol of Hong Kong’s law and order.”

Much of the case hinged on the meaning of his slogan. The defense had argued that the slogan contained several possible meanings with no one single interpretation to be understood by all who saw it mounted on his motorcycle that day.

They also argued there was no evidence that he did anything to incite others to commit crimes, let alone to encourage people to fight for Hong Kong’s secession.

However, the judges ruled that the slogan was “at the very least capable” of promoting Hong Kong’s independence from China and that due to the circumstances “it is not necessary for the court to resolve the differences” between the slogan’s possible interpretations.

“[W]e have no difficulty in coming to the sure conclusion that the Slogan as at 1 July 2020 was capable of carrying the meaning of separating the HKSAR (Hong Kong Special Administrative Region) from the PRC (Peoples’ Republic of China) and was capable of inciting others to commit secession,” the judges said in the ruling.

The law was imposed last summer following a year of mass pro-democracy demonstrations that at times brought the former British colony to a standstill.