Maybe I can't find something nice to say about dictator like Hitler, but I can say that the German people have given us tremendous music through Beethoven, Bach and Handel. Maybe I can't say something nice about Islam, but I can say that the woman Muslim neighbor of mine, was pleasant to me.
Any person that is not capable of even one of those actions needs to seriously question their own personal commitment to Christ.
Seriously are you all saying that it is impossible to say: "Mother Teresa did a wonderful of aiding the poor in India and in supporting the worldwide pro-life movement." or "The Catholic Church has inspired some magnificent architecture or done a good job of preserving Objects D'art."
Commitment to Christ? Commitment to Christ is the very reason I can't say anything nice about those who take the focus off Him and put it on something or someone else. Hitler? Are you kidding me? Mother Teresa? Her attitude was that whatever god you served was good enough. I can't even imagine how many souls were lost because she wasn't honest about the only way to salvation. And the Catholic Church and it's "magnificent architecture" and "Objects D'art"? Not hardly.
We're talking about people and their destiny for eternity. Every one of those you mentioned have taken away from the focus on Christ alone. Christ and the apostles didn't go around teaching how to build "magnificent architecture" or create "Objects D'art". They taught a simple gospel of belief and faith on Jesus alone as the only hope of eternal life with Him while denouncing all the earthly pomp and grandeur.
My commitment IS to Christ alone and what will last for eternity. All that "magnificent architecture" and "Objects D'art" will end up in ashes and rubble as it always has in the past.