SEOUL, A group of alumni from the Korea Advanced Institute of Science and Technology (KAIST) filed a complaint Tuesday against the Presidential Security Service after PSS agents forcefully carried a graduating student out of last week's graduation ceremony for shouting at President Yoon Suk Yeol. On Friday, Shin Min-ki, a KAIST graduate and member of a minor progressive party, had his mouth covered by PSS agents and was carried out of the ceremony by his limbs after creating a scene by shouting at Yoon during his congratulatory speech. Shin shouted a demand for an increase in the government's research and development (RandD) budget after the Yoon government slashed the budget to reallocate funds to other areas. A group of 26 KAIST alumni on Tuesday filed a complaint with the police against the chief and members of the PSS, accusing them of abuse of authority, violence and illegal detention. The complainants included Kim Hye-min, the school's 2004 student body president, who is now affiliated with the mai n opposition Democratic Party. Kim Dong-a, a lawyer representing the complainants, said, "In a democratic nation, it is the due right of the people to protest against a president's policies and shout demands," accusing presidential guards of excessively overpowering Shin. Source: Yonhap News Agency