While South Korean protesters have long employed songs, dances and chants, customized 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 protesters have braved near sub-zero temperatures and gathered outside the National Assembly in the capital of Seoul since Yoon¡¯s failed martial law attempt last week.

"Impeach, impeach. Impeach Yoon Suk Yeol," protesters chanted to the beat of K-pop group aespa¡¯s latest techno track "Whiplash."