At the opening of an exhibition at the Museum of History on 2 March 2011, Steve Wong Chun-kit, member of the League of Social Democrats rushed at Donald Tsang. Protesters also threw cooked rice at Tsang, as a symbol of the plight of the poor, but missed him. Tsang said his chest was hit by the protestor and had a medical check at the Queen Mary Hospital afterwards. Tsang denounced the protest, saying that violence was unacceptable in Hong Kong, where civilised behaviour and the rule of law were fundamental values. However Leung Kwok-hung said he did not see any physical contact between Tsang and protesters. Steve Wong was arrested and released on bail.