What?

South Koreans are protesting against the US and South Korea's joint combat air drills. The protestors protested outside the US embassy in Seoul and asked the governments to opt for a peaceful solution instead of the military exercises.

Why?

The South Korean government has partnered with US as a show of strength against North Korea's missile test, which was conducted a week ago. South Koreans want a peaceful solution to the crisis and are against a war with North Korea.