Citizens who fled the infamous totalitarian state, and now live in South Korea, destroyed images of their former leader in central Seoul.
They told reporters they were furious that North Korea has been included in the upcoming Winter Olympics, which are due to take place in February at ski resort Pyeongchang.
Critics of Seoul’s decision to make provisions for Kim Jong-un’s athletes to join the Games say it legitimises the secretive state, which is known for its human rights abuses.
Earlier in the week, further protests were held in which a large banner depicting Kim Jong-un was burned in front of a major train station in the South Korean capital.
South Korea and North Korea held their first diplomatic talks in more than two years when they arranged for Kim’s secretive nation to join the Olympics.
Ordinarily it would be difficult for North Korea to sanction sending athletes to the South, after tensions between the two countries escalated to boiling point in recent months.
South Korean government spokespeople have said the move will improve the relationship between the two countries.
On Monday Seoul rejected criticism that the Winter Games had been “hijacked” by despotic Kim, saying the tournament would help to reduce tensions between the two nations.
The two countries had grown increasingly hostile in recent years, with relations reduced to North Korean slinging of insults, and pointed military manoeuvres on both sides of the demilitarised zone.
The agreement over February’s Winter Olympics appeared to signal a thawing point in the two Koreas’ icy relationship.
Opposition politicians and conservatives have dubbed the Games, which will be held in southern Pyeongchang, the “Pyongyang Olympics”, in a dig referring to the North Korean capital.
It comes after plans including a joint women’s ice hockey team and marching under a united flag proved controversial among many South Koreans.
Harsher critics accusing South Korean president Moon Jae-in of lending legitimacy to the dictatorship.
But South Korean presidential spokesman Park Soo-hyun told a news conference the joint ventures would benefit Seoul.
He said: “We’re confident that the Olympics will be a stepping stone to bring peace to the Korean peninsula, to Northeast Asia and the world.”