Why would you respect someone for sacrificing and fighting for what they think is just? Osama Bin Laden wasn't too different either. Many Islamic terrorists were engineers before sacrificing their careers and fighting for what they believed in. You're right that they are true inspirations to others, but you seem to imply that's a good thing. Gangsters are obviously also a true inspiration to others (hence glamorization of gangster life) but not really good for society.
I suspect that what you really mean is Guevara fought for what you think is just. But that's a weaker statement.
I suspect that what you really mean is Guevara fought for what you think is just. But that's a weaker statement.