By Hyunsu Yim, Nicoco Chan, Minwoo Park SEOUL (Reuters) -While South Korean protesters have long employed songs, dances and chants, customised light sticks popular with K-pop fans have emerged as an effective new tool for demonstrators calling for the impeachment of President Yoon Suk Yeol.

Tens of thousands of South Koreans poured onto the streets Saturday, in the largest protest yet over President Yoon Suk Yeol's ill-fated effort to impose martial law on the country was thwarted.

Tens of thousands of South Koreans protest against President Yoon Suk Yeol's failed martial law attempt, using vibrant K-pop light sticks to unite and call for his impeachment, showcasing a new wave of activism blending music and political expression.

Item 1 of 4 Fans of K-pop boy band NCT sing one of their songs while holding light sticks, as they attend a protest rally calling for the impeachment of South Korean President Yoo

Facing mounting public protests and impeachment attempts, he vowed on Thursday to remain in office despite allegations of rebellion and insurrection. “I will fight to the end,” Mr Yoon declared in a televised address,

South Korean police said Wednesday that security guards were blocking a raid on President Yoon Suk Yeol's offices to investigate his brief imposition of martial law.

North Korea comments on South Korea's emergency martial law declaration, highlighting protests and impeachment calls against President Yoon.

Hundreds gathered peacefully again on Wednesday outside South Korea's parliament building to demand the impeachment of President Yoon Suk Yeol, after his shock attempt at imposing martial law last week.