About 150 people from a conservative civic group gathered near Gwanghwamun Square and called for the South Korean government to take stern measures against North Korea.
They burned an effigy of North Korean leader Kim Jong Un and cut apart the North Korean flag.
North Korea announced on Wednesday it had tested a hydrogen bomb for the first time, drawing widespread international condemnation but also skepticism and doubt.
Protesters in Seoul burn effigy of Kim Jong Un
07 January 2016
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Protesters took to the streets in Seoul to denounce North Korea`s reported nuclear testing.
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