yep! he's the avatara who came before the rama of ayodhya.. he's supposed to be a chiranjivin(a person who's nearly immortal). He's also supposed to be the martial arts teacher of lord kalki the 10th avatara of vishnu who's yet to arive in this world.
death of evil doers actually that includes politicians as well.. in the puranas(hindu scriptures) its written that "crooks will become kings" and the crooks i know who became kings are our present day politicians.
yep the second coming of christ and kalki are the same characters. both ride a white horse and both carry a double edged sword.things can't get more similar.