Good and bad. Benevolent and evil. The just and the corrupt. Who makes the choice on who is the 'good' or 'bad' guy?

I just finished watching Che (both parts) and I find this question rather difficult to solve. Che was a communist revolutionary who aided Castro to power in Cuba. After the success of his first revolution Che wished to take the fight to Latin America, namely Bolivia. The Bolivian government did not care for communism and was keen on staying semi-democratic (some say the president at that time was more of a dictator).  Che and his rag tag bunch of Cuban and Bolivian fighters trudged through the Bolivian jungles to fight the good fight and secure a communist party in Bolivia. They did not succeed. Che was captured and executed. 

I kept asking myself, were the motives of Che really that terrible? He was doing what he believed was correct and fought for his ideals and those of others. He seemed to be concerned with the lower peasant class of Bolivia and the education of the children.  On the other hand, were the actions still horrible because they brought violence but minimal casualties of peasants? 

What about the democratic government in Bolivia? They rose to power from violence, as did many major governments throughout history. What justification did they have to say that Che was incorrect? 

I guess what I am trying to get at is the fact that good and evil are two terms that arise from bias views. What is left when we get rid of that bias view and look at things objectively?

Anyway it is time to sit.

Night.