Complex sentence: Strachan's case and the publicity around it made South African media much more cautious about publishing anything critical of any government agency; in the longer term they led to a process of prison reform which helped the next generation of political prisoners such as Mandela.
Split into simpler sentences: Strachan's case and the publicity around it made South African media much more cautious about publishing anything critical of any government agency. In the longer term they led to a process of prison reform which helped the next generation of political prisoners such as Mandela.