Attractions are generally very safe (one hundred times safer than driving a car and a thousand times safer than flying). The accidents are sorted in stupidity. Most accidents are in Six Flags parks, because these parks have the wildest attractions. But if an accident ever happens to it, it is gigantic in the media. The blame is always placed at the attraction: "Boy wounded by attraction" and that kind of titles, 90% just happens by stupid people (with other accidents is that too, 70% in traffic and 99% with fireworks).
PS. I'm a Dutchman so sorry for my bad English grammar.