was adolf hitler a leader?
http://www.historyplace.com/worldwar2/riseofhitler/index.htm
Yes, of the German people after their dissatisfaction with the outcome of the Great War.
Here are other links:
http://www.google.com/search?q=adolf+hitler&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA
Now, if you are going to redefine "leader," then you'll have some thinking to do.
=)
In defining "leader," this site might help.
http://www.members.cox.net/dagershaw/lol/Charisma.html
I hope this helps a little more. Thanks for asking.