Mao Zedong

besides condamning to death millions of people, Mao Zedong is also responsible for one of the greatest bird massacres of history. tree sparrows were blamed to eat the crops, thus, the communist leader proclaimed his famous pest control campaign. the method was highly effective, and millions of sparrows were slaughtered. nevertheless, the action was a fiasco and it was counterproductive as worms and insects suddenly released from predation became extremely abundant.

FAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIL!

and yes there is a site for sparrows.