Thoughts On Che Guevara: good or bad?

when it comes to history, i dont think i have ever been so confused about a person as Ernesto Che Guevera. I have read his books (motorcycle diaries, manifesto essays and so on). id like to think of him as the legendary revolutionary who abandoned his profession and his native land to pursue the emancipation of the poor of the earth but then i cant overlook the fact that he was was Chief executioner for the Castro regime, responsible for the murder of thousands (ordering 700 executions by the firing squad on a single day wothout a trial). So what are your thoughts on ernesto guevara