Lee was referring to a controversy over a series of reports on violent graduation rituals by some middle and high school students.
"While talking with presidential staff, the President pointed out that some TV programs targeting teenagers are negatively affecting their culture," spokesman Park Sun-kyoo said.
"Lee was worried about the possibility that sexually explicit expressions and violent acts shown in the programs could do harm to students and lead to an increase in juvenile crime."
The remarks indicate that there could be a crackdown in the future on TV shows and some entertainers who have gained popularity for slanderous remarks.
The Korea Communications Commission and the Ministry of Culture, Sports and Tourism are responsible for supervising mass media and the entertainment industry.
On Wednesday, President Lee expressed regret over an ongoing police investigation of students who allegedly forced their juniors to take off their clothes and harassed them following a graduation ceremony at a middle school in Goyang, Gyeonggi Province, last week.
"It is not the police, but our society that should handle that case," Lee said during a meeting with his secretaries. "It is not just a criminal case, but a matter of culture that should be dealt with by parents, the school and graduates."
According to police, the naked students were forced to pose for photos near an apartment complex. The pictures were rapidly spread on the Internet, prompting police to look into the case.
Source: The Korea Times