Actually if you do some reading on North Korea, a lot of the population are disillusioned with the North Korean government.
Years of famine and lies have finally taken their toll. I recommend reading Nothing to Envy by Barbara Demick which demonstrates this.
However you will have those who will stay loyal to the end.
The New York Times reports that the South Korean Deputy Minister of Defence, Lee Yong-geul, has now acknowledged that artillery units were firing test shots on Tuesday afternoon close to the North Korean coast, from a battery on the South Korean island of Paeknyeongdo. But he denied that the shots crossed the disputed maritime border with North Korea.