I don't believe anyone should have "absolute faith" in the sense that they should believe something without ever questioning it or thinking about what they believe, and what it means. But when someone has faith in a creed or religion, and then does something wrong, it is the fault of either the individual for misinterpreting the actual creed or religion, or a fault in the creed or religion itself. Faith, like almost every human condition or path, is not inherently good or bad, it depends on what you have faith in.