It’s not political, it’s art, he says: Hong Kong artist Frog King opens exhibition filled with protest references

• Friends say, ‘Frog King, you betrayed us, you don’t come with us to demonstrate on the streets.’ The artist’s reply? ‘I am not a political demonstrator’
• For all his protestations, though, Kwok Mang-ho’s recent work, currently on show, includes rivulets of tear gas and umbrellas – symbol of Hong Kong protest