Task about a topic from my teacher

Nowadays nobody doubts about the importance of sport. Sports is an essential tool to for personal and social development.
Sports give people importants values and principles like respect or solidarity. Sports show the necessity of team work or the perseverance to get an achieve a goal.
Sports are also important to grow in provide a balance between physical and mental development, so it is important that the education system and the media (not sure the media is the right word here) give support and facilities to practice differents sports.
But I think this support has become excessive. There are television programs dedicated totally to sports, on news media they talk about sports for much longer than they do about other questions which are more importants to people.
I think there are is news about the economy, culture, science or and the environmentally that the economic power and mass media don’t doesn't broadcast. They think that people don’t need that news. They prefer people doesn’t not to know have that information and they fill out the news media with sport.

Very good. There are parts where I am not exactly sure what you are trying to say. Maybe-

I think there is news about the economy, culture, science and the environmental that the economic powers and mass media don’t want to be broadcast. They think that people shouldn't be given that news.