Mander relates how the introduction of TV to a Canadian Indian community damaged the traditional lifestyle. For example, story telling, a time honoured way of passing on tribal knowledge, was neglected. People started imitating the negative behaviour portrayed in TV shows. Very rarely a station may have a phone-in for a hospital or a charity. Any good they do is miniscule compared to the harm they do.
TV stations promote sexism,violence, anti-social behaviour and gross consumerism.
Not only are TV stations business organisations out to maximise profits, they are agents of mind control. It is not good enough to improve programs and control TV viewing, especially that of children. Since Mander wrote his book programs have got worse. The characters are selfish and nasty to one another. It is not a bit of harmless fun, it conveys undesirable behaviour that some viewers imitate.