No one will be the next Hitler. But someone  will be the next to use the same textbook as dictators has throughout time. As far as Hitler goes, I can't think of anyone in the western hemisphere that resembles him more right now 

 There are certainly some western leaders who resemble authoritarian leaders of the past. 

One of which is: 

https://m.primal.net/HbnI.png   

 please elaborate 

 He is old and might not cater to your believes, but dictator...?