You must be joking! How can you respect people who are evil like Hitler?
It's why we have things like courts and fair trials.
I don't respect Hitler, but the laws we have in place respect his right to be heard in the same way as someone else. (So judgments are balanced)
The problem in allowing someone the respect they deserve, is its too subjective and open to interpretation.
Saddem Hussein used chemical weapons on the Kurds, he was giving them the respect he thought they deserved.
Hitler dished out the holocaust to the Jews because he thought that was the respect they deserved.
It's all subjective.
We all have the ability to be prejudiced in some way, even if we are not aware of it.
Having courts in place and putting people on trial is supposed to take out some of the subjectiveness.
Therefore putting Hitler on trial or any of the Nazi war criminals was a way of respecting their humanity and rights.
Allowing people the respect you think they deserve, is to reminiscent of what Hitler, Saddam Hussein and quite a few others have already done.
I'm with Hope on this one.
Unless you want to avoid becoming a Hitler in your own right, making subjective guesses about who deserves what respect, its best avoided.