In a world of the media,there is increasing variations of television shows.
.... This is a pretty confusing hook :(
Some people believe that the broadcasting from court might pose a negative effect on the audience.
Your prompt does not talk about broadcasting from court and therefore do not narrow down the scope of your prompt. Your introduction should introduce the topic it is original sense to the reader. That's important.
However, in my opinion, modern society has to understand the principles how legal system works
Again, this is not what they expect you as the opinion. They ask you -
Do you think advantages of this outweigh its disadvantages?
You need to answer this question.