Good song by Randy Newman (famous singer/songwriter, e.g. wrote/sang You’ve Got a Friend in Me from Toy Story):

When Karl Marx was a boy
he took a hard look around
He saw people were starving all over the place
while others were painting the town
The public spirited boy
became a public spirited man
So he worked very hard and he read everything
until he came up with a plan

Randy Newman – The World Isn’t Fair